13657272 has 16 divisors (see below), whose sum is σ = 34143240. Its totient is φ = 4552416.

The previous prime is 13657249. The next prime is 13657279. The reversal of 13657272 is 27275631.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13657279) 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, 284503 + ... + 284550.

Almost surely, 2^13657272 is an apocalyptic number.

13657272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13657272 is an abundant number, since it is smaller than the sum of its proper divisors (20485968).

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

13657272 is a wasteful number, since it uses less digits than its factorization.

13657272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569062 (or 569058 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 13657272 is about 3695.5746508493. The cubic root of 13657272 is about 239.0312336998.

The spelling of 13657272 in words is "thirteen million, six hundred fifty-seven thousand, two hundred seventy-two".