13993256 has 8 divisors (see below), whose sum is σ = 26237370. Its totient is φ = 6996624.

The previous prime is 13993237. The next prime is 13993267. The reversal of 13993256 is 65239931.

It can be written as a sum of positive squares in only one way, i.e., 12716356 + 1276900 = 3566^2 + 1130^2 .

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

It is a super-2 number, since 2×13993256² = 391622426963072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 874571 + ... + 874586.

Almost surely, 2^13993256 is an apocalyptic number.

It is an amenable number.

13993256 is a deficient number, since it is larger than the sum of its proper divisors (12244114).

13993256 is a wasteful number, since it uses less digits than its factorization.

13993256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749163 (or 1749159 counting only the distinct ones).

The product of its digits is 43740, while the sum is 38.

The square root of 13993256 is about 3740.7560733092. The cubic root of 13993256 is about 240.9755202031.

The spelling of 13993256 in words is "thirteen million, nine hundred ninety-three thousand, two hundred fifty-six".