13157288 has 24 divisors (see below), whose sum is σ = 25797450. Its totient is φ = 6290592.

The previous prime is 13157267. The next prime is 13157293. The reversal of 13157288 is 88275131.

It can be written as a sum of positive squares in only one way, i.e., 12545764 + 611524 = 3542^2 + 782^2 .

It is a super-2 number, since 2×13157288² = 346228455029888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2678 + ... + 5786.

Almost surely, 2^13157288 is an apocalyptic number.

It is an amenable number.

13157288 is a deficient number, since it is larger than the sum of its proper divisors (12640162).

13157288 is a wasteful number, since it uses less digits than its factorization.

13157288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161 (or 3134 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 13157288 is about 3627.2976166838. The cubic root of 13157288 is about 236.0779690670.

The spelling of 13157288 in words is "thirteen million, one hundred fifty-seven thousand, two hundred eighty-eight".