12889960 has 16 divisors (see below), whose sum is σ = 29002500. Its totient is φ = 5155968.

The previous prime is 12889957. The next prime is 12889963. The reversal of 12889960 is 6998821.

It is a happy number.

12889960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12889957) and next prime (12889963).

It can be written as a sum of positive squares in 2 ways, for example, as 12574116 + 315844 = 3546^2 + 562^2 .

It is not an unprimeable number, because it can be changed into a prime (12889963) 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, 161085 + ... + 161164.

Almost surely, 2^12889960 is an apocalyptic number.

12889960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12889960 is an abundant number, since it is smaller than the sum of its proper divisors (16112540).

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

12889960 is a wasteful number, since it uses less digits than its factorization.

12889960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322260 (or 322256 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 12889960 is about 3590.2590435789. The cubic root of 12889960 is about 234.4681498774.

The spelling of 12889960 in words is "twelve million, eight hundred eighty-nine thousand, nine hundred sixty".