13657172 has 6 divisors (see below), whose sum is σ = 23900058. Its totient is φ = 6828584.

The previous prime is 13657169. The next prime is 13657183. The reversal of 13657172 is 27175631.

It can be written as a sum of positive squares in only one way, i.e., 12645136 + 1012036 = 3556^2 + 1006^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1707143 + ... + 1707150.

It is an arithmetic number, because the mean of its divisors is an integer number (3983343).

Almost surely, 2^13657172 is an apocalyptic number.

It is an amenable number.

13657172 is a deficient number, since it is larger than the sum of its proper divisors (10242886).

13657172 is a wasteful number, since it uses less digits than its factorization.

13657172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414297 (or 3414295 counting only the distinct ones).

The product of its digits is 8820, while the sum is 32.

The square root of 13657172 is about 3695.5611211290. The cubic root of 13657172 is about 239.0306502944.

The spelling of 13657172 in words is "thirteen million, six hundred fifty-seven thousand, one hundred seventy-two".