13247136 has 72 divisors (see below), whose sum is σ = 43059744. Its totient is φ = 3784320.

The previous prime is 13247119. The next prime is 13247159. The reversal of 13247136 is 63174231.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×13247136² = 350973224404992, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1270 + ... + 5301.

It is an arithmetic number, because the mean of its divisors is an integer number (598052).

Almost surely, 2^13247136 is an apocalyptic number.

13247136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13247136 is an abundant number, since it is smaller than the sum of its proper divisors (29812608).

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

13247136 is a wasteful number, since it uses less digits than its factorization.

13247136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6594 (or 6583 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 13247136 is about 3639.6615227243. The cubic root of 13247136 is about 236.6141239791.

The spelling of 13247136 in words is "thirteen million, two hundred forty-seven thousand, one hundred thirty-six".