12989580 has 24 divisors (see below), whose sum is σ = 36370992. Its totient is φ = 3463872.

The previous prime is 12989563. The next prime is 12989591. The reversal of 12989580 is 8598921.

It is a happy 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, 108187 + ... + 108306.

It is an arithmetic number, because the mean of its divisors is an integer number (1515458).

Almost surely, 2^12989580 is an apocalyptic number.

12989580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12989580 is an abundant number, since it is smaller than the sum of its proper divisors (23381412).

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

12989580 is a wasteful number, since it uses less digits than its factorization.

12989580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216505 (or 216503 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 12989580 is about 3604.1059917822. The cubic root of 12989580 is about 235.0706291400.

It can be divided in two parts, 1298 and 9580, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 12989580 in words is "twelve million, nine hundred eighty-nine thousand, five hundred eighty".