Do you think you know everything about the number 13? Here you can test your knowledge about this number, and find out if they are correct, or if you still had things to know about the number 13. Do not know what can be useful to know the characteristics of the number 13? Think about how many times you use numbers in your daily life, surely there are more than you thought. Knowing more about the number 13 will help you take advantage of all that this number can offer you.

13 is a natural number (hence integer, rational and real) of 2 digits that follows 12 and precedes 14.

13 is an even number, since it is divisible by 2.

The number 13 is a unique number, with its own characteristics that, for some reason, has caught your attention. It is logical, we use numbers every day, in multiple ways and almost without realizing it, but knowing more about the number 13 can help you benefit from that knowledge, and be of great use. If you keep reading, we will give you all the facts you need to know about the number 13, you will see how many of them you already knew, but we are sure you will also discover some new ones.

Number 13 in English is written asthirteen

The number 13 is pronounced digit by digit as (1) one (3) three.

The number 13 has 2 divisors, they are as follows:

The sum of its divisors, excluding the number itself is 1, so it is a defective number and its abundance is -12The factorization into prime factors of 13 is:

13^{1}

The square root of 13 is. 3.605551275464

The square of 13, the result of multiplying 13*13 is. 169

The decimal number 13 into binary numbers is.1101

The decimal number 13 in octal numbers is15

The decimal number 13 in hexadecimal numbers isd

The neperian or natural logarithm of 13 is.2.5649493574615

The base 10 logarithm of 13 is1.1139433523068

The sine of 13 radians is.0.42016703682664

The cosine of 13 radians is. 0.9074467814502

The tangent of 13 radians is.0.46302113293649

Surely there are many things about the number 13 that you already knew, others you have discovered on this website. Your curiosity about the number 13 says a lot about you. That you have researched to know in depth the properties of the number 13 means that you are a person interested in understanding your surroundings. Numbers are the alphabet with which mathematics is written, and mathematics is the language of the universe. To know more about the number 13 is to know the universe better. On this page we have for you many facts about numbers that, properly applied, can help you exploit all the potential that the number 13 has to explain what surrounds us..