13089256 has 8 divisors (see below), whose sum is σ = 24542370. Its totient is φ = 6544624.

The previous prime is 13089229. The next prime is 13089281. The reversal of 13089256 is 65298031.

It can be written as a sum of positive squares in only one way, i.e., 8820900 + 4268356 = 2970^2 + 2066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×13089256³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 818071 + ... + 818086.

Almost surely, 2^13089256 is an apocalyptic number.

It is an amenable number.

13089256 is a deficient number, since it is larger than the sum of its proper divisors (11453114).

13089256 is a wasteful number, since it uses less digits than its factorization.

13089256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636163 (or 1636159 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 13089256 is about 3617.9076826254. The cubic root of 13089256 is about 235.6703719496.

The spelling of 13089256 in words is "thirteen million, eighty-nine thousand, two hundred fifty-six".