13000881 has 16 divisors (see below), whose sum is σ = 17860608. Its totient is φ = 8408400.

The previous prime is 13000877. The next prime is 13000891. The reversal of 13000881 is 18800031.

It is a happy number.

It is not a de Polignac number, because 13000881 - 2² = 13000877 is a prime.

It is a super-2 number, since 2×13000881² = 338045813552322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13000831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13816 + ... + 14726.

It is an arithmetic number, because the mean of its divisors is an integer number (1116288).

Almost surely, 2^13000881 is an apocalyptic number.

It is an amenable number.

13000881 is a deficient number, since it is larger than the sum of its proper divisors (4859727).

13000881 is an equidigital number, since it uses as much as digits as its factorization.

13000881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 13000881 is about 3605.6734461124. The cubic root of 13000881 is about 235.1387802569.

The spelling of 13000881 in words is "thirteen million, eight hundred eighty-one", and thus it is an aban number.