12887980 has 36 divisors (see below), whose sum is σ = 31485888. Its totient is φ = 4418400.

The previous prime is 12887933. The next prime is 12887993. The reversal of 12887980 is 8978821.

12887980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12887980² = 332200056960800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5596 + ... + 7555.

It is an arithmetic number, because the mean of its divisors is an integer number (874608).

Almost surely, 2^12887980 is an apocalyptic number.

12887980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12887980 is an abundant number, since it is smaller than the sum of its proper divisors (18597908).

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

12887980 is a wasteful number, since it uses less digits than its factorization.

12887980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13174 (or 13165 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 12887980 is about 3589.9832868692. The cubic root of 12887980 is about 234.4561438740.

The spelling of 12887980 in words is "twelve million, eight hundred eighty-seven thousand, nine hundred eighty".