12911888 has 20 divisors (see below), whose sum is σ = 27291408. Its totient is φ = 5868960.

The previous prime is 12911881. The next prime is 12911897. The reversal of 12911888 is 88811921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12911881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36506 + ... + 36857.

Almost surely, 2^12911888 is an apocalyptic number.

It is an amenable number.

12911888 is an abundant number, since it is smaller than the sum of its proper divisors (14379520).

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

12911888 is a wasteful number, since it uses less digits than its factorization.

12911888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73382 (or 73376 counting only the distinct ones).

The product of its digits is 9216, while the sum is 38.

The square root of 12911888 is about 3593.3115645599. The cubic root of 12911888 is about 234.6010312018.

The spelling of 12911888 in words is "twelve million, nine hundred eleven thousand, eight hundred eighty-eight".