12919880 has 16 divisors (see below), whose sum is σ = 29069820. Its totient is φ = 5167936.

The previous prime is 12919871. The next prime is 12919883. The reversal of 12919880 is 8891921.

It can be written as a sum of positive squares in 2 ways, for example, as 12432676 + 487204 = 3526^2 + 698^2 .

It is not an unprimeable number, because it can be changed into a prime (12919883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161459 + ... + 161538.

Almost surely, 2^12919880 is an apocalyptic number.

12919880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12919880 is an abundant number, since it is smaller than the sum of its proper divisors (16149940).

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

12919880 is a wasteful number, since it uses less digits than its factorization.

12919880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323008 (or 323004 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 12919880 is about 3594.4234586370. The cubic root of 12919880 is about 234.6494244534.

The spelling of 12919880 in words is "twelve million, nine hundred nineteen thousand, eight hundred eighty".