12540872 has 16 divisors (see below), whose sum is σ = 23846400. Its totient is φ = 6181840.

The previous prime is 12540811. The next prime is 12540877. The reversal of 12540872 is 27804521.

It is not an unprimeable number, because it can be changed into a prime (12540877) 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, 10472 + ... + 11607.

It is an arithmetic number, because the mean of its divisors is an integer number (1490400).

Almost surely, 2^12540872 is an apocalyptic number.

It is an amenable number.

12540872 is a deficient number, since it is larger than the sum of its proper divisors (11305528).

12540872 is a wasteful number, since it uses less digits than its factorization.

12540872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22156 (or 22152 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 12540872 is about 3541.3093623687. The cubic root of 12540872 is about 232.3321145123.

The spelling of 12540872 in words is "twelve million, five hundred forty thousand, eight hundred seventy-two".