Search a number
-
+
12813441 = 343711399
BaseRepresentation
bin110000111000…
…010010000001
3220002222201220
4300320102001
511240012231
61134345253
7213624654
oct60702201
926088656
1012813441
117261a23
12435b229
132868324
1419b789b
1511d1896
hexc38481

12813441 has 16 divisors (see below), whose sum is σ = 17740800. Its totient is φ = 8220240.

The previous prime is 12813413. The next prime is 12813487. The reversal of 12813441 is 14431821.

It is not a de Polignac number, because 12813441 - 26 = 12813377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12813641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8460 + ... + 9858.

It is an arithmetic number, because the mean of its divisors is an integer number (1108800).

Almost surely, 212813441 is an apocalyptic number.

It is an amenable number.

12813441 is a deficient number, since it is larger than the sum of its proper divisors (4927359).

12813441 is a wasteful number, since it uses less digits than its factorization.

12813441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516.

The product of its digits is 768, while the sum is 24.

The square root of 12813441 is about 3579.5867079874. The cubic root of 12813441 is about 234.0032690025.

The spelling of 12813441 in words is "twelve million, eight hundred thirteen thousand, four hundred forty-one".

Divisors: 1 3 43 71 129 213 1399 3053 4197 9159 60157 99329 180471 297987 4271147 12813441