12956136 has 16 divisors (see below), whose sum is σ = 32390400. Its totient is φ = 4318704.

The previous prime is 12956131. The next prime is 12956137. The reversal of 12956136 is 63165921.

It is a happy number.

12956136 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12956136² = 335722920100992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12956097 and 12956106.

It is not an unprimeable number, because it can be changed into a prime (12956131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269896 + ... + 269943.

It is an arithmetic number, because the mean of its divisors is an integer number (2024400).

Almost surely, 2^12956136 is an apocalyptic number.

It is an amenable number.

12956136 is an abundant number, since it is smaller than the sum of its proper divisors (19434264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12956136 is a wasteful number, since it uses less digits than its factorization.

12956136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539848 (or 539844 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 12956136 is about 3599.4632933258. The cubic root of 12956136 is about 234.8687119390.

Subtracting from 12956136 its product of digits (9720), we obtain a triangular number (12946416 = T₅₀₈₈).

It can be divided in two parts, 129 and 56136, that added together give a palindrome (56265).

The spelling of 12956136 in words is "twelve million, nine hundred fifty-six thousand, one hundred thirty-six".