12813880 has 32 divisors (see below), whose sum is σ = 28933200. Its totient is φ = 5107456.

The previous prime is 12813859. The next prime is 12813883. The reversal of 12813880 is 8831821.

12813880 is nontrivially palindromic in base 12.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22236 + ... + 22804.

Almost surely, 2^12813880 is an apocalyptic number.

12813880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12813880 is an abundant number, since it is smaller than the sum of its proper divisors (16119320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12813880 is a wasteful number, since it uses less digits than its factorization.

12813880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 12813880 is about 3579.6480273904. The cubic root of 12813880 is about 234.0059413594.

The spelling of 12813880 in words is "twelve million, eight hundred thirteen thousand, eight hundred eighty".