12836556 has 30 divisors (see below), whose sum is σ = 33558140. Its totient is φ = 4278744.

The previous prime is 12836543. The next prime is 12836557. The reversal of 12836556 is 65563821.

It is a super-2 number, since 2×12836556² = 329554339882272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12836556.

It is not an unprimeable number, because it can be changed into a prime (12836557) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19486 + ... + 20133.

Almost surely, 2^12836556 is an apocalyptic number.

It is an amenable number.

12836556 is an abundant number, since it is smaller than the sum of its proper divisors (20721584).

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

12836556 is a wasteful number, since it uses less digits than its factorization.

12836556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39635 (or 39624 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 12836556 is about 3582.8139778671. The cubic root of 12836556 is about 234.1438957157.

The spelling of 12836556 in words is "twelve million, eight hundred thirty-six thousand, five hundred fifty-six".