12537972 has 36 divisors (see below), whose sum is σ = 32235840. Its totient is φ = 4107792.

The previous prime is 12537971. The next prime is 12537977. The reversal of 12537972 is 27973521.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12537971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 828 + ... + 5075.

It is an arithmetic number, because the mean of its divisors is an integer number (895440).

Almost surely, 2^12537972 is an apocalyptic number.

12537972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12537972 is an abundant number, since it is smaller than the sum of its proper divisors (19697868).

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

12537972 is a wasteful number, since it uses less digits than its factorization.

12537972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972 (or 5967 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 12537972 is about 3540.8998856223. The cubic root of 12537972 is about 232.3142046712.

The spelling of 12537972 in words is "twelve million, five hundred thirty-seven thousand, nine hundred seventy-two".