12990980 has 24 divisors (see below), whose sum is σ = 27359640. Its totient is φ = 5181440.

The previous prime is 12990979. The next prime is 12991037. The reversal of 12990980 is 8909921.

It can be written as a sum of positive squares in 4 ways, for example, as 145924 + 12845056 = 382^2 + 3584^2 .

It is a super-2 number, since 2×12990980² = 337531122720800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8516 + ... + 9924.

It is an arithmetic number, because the mean of its divisors is an integer number (1139985).

Almost surely, 2^12990980 is an apocalyptic number.

12990980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12990980 is an abundant number, since it is smaller than the sum of its proper divisors (14368660).

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

12990980 is a wasteful number, since it uses less digits than its factorization.

12990980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 12990980 is about 3604.3002094720. The cubic root of 12990980 is about 235.0790740386.

The spelling of 12990980 in words is "twelve million, nine hundred ninety thousand, nine hundred eighty".