12913536 has 32 divisors (see below), whose sum is σ = 34302600. Its totient is φ = 4304384.

The previous prime is 12913529. The next prime is 12913541. The reversal of 12913536 is 63531921.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16431 + ... + 17198.

Almost surely, 2^12913536 is an apocalyptic number.

12913536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12913536 is an abundant number, since it is smaller than the sum of its proper divisors (21389064).

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

12913536 is an equidigital number, since it uses as much as digits as its factorization.

12913536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33646 (or 33634 counting only the distinct ones).

The product of its digits is 4860, while the sum is 30.

The square root of 12913536 is about 3593.5408721761. The cubic root of 12913536 is about 234.6110118246.

The spelling of 12913536 in words is "twelve million, nine hundred thirteen thousand, five hundred thirty-six".