12891952 has 20 divisors (see below), whose sum is σ = 25043040. Its totient is φ = 6429248.

The previous prime is 12891941. The next prime is 12891953. The reversal of 12891952 is 25919821.

It is not an unprimeable number, because it can be changed into a prime (12891953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7353 + ... + 8935.

It is an arithmetic number, because the mean of its divisors is an integer number (1252152).

Almost surely, 2^12891952 is an apocalyptic number.

It is an amenable number.

12891952 is a deficient number, since it is larger than the sum of its proper divisors (12151088).

12891952 is a wasteful number, since it uses less digits than its factorization.

12891952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100 (or 2094 counting only the distinct ones).

The product of its digits is 12960, while the sum is 37.

The square root of 12891952 is about 3590.5364501701. The cubic root of 12891952 is about 234.4802274038.

The spelling of 12891952 in words is "twelve million, eight hundred ninety-one thousand, nine hundred fifty-two".