12972556 has 12 divisors (see below), whose sum is σ = 22732920. Its totient is φ = 6477440.

The previous prime is 12972527. The next prime is 12972559. The reversal of 12972556 is 65527921.

It is not an unprimeable number, because it can be changed into a prime (12972559) 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, 1971 + ... + 5461.

It is an arithmetic number, because the mean of its divisors is an integer number (1894410).

Almost surely, 2^12972556 is an apocalyptic number.

It is an amenable number.

12972556 is a deficient number, since it is larger than the sum of its proper divisors (9760364).

12972556 is a wasteful number, since it uses less digits than its factorization.

12972556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4424 (or 4422 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 12972556 is about 3601.7434667116. The cubic root of 12972556 is about 234.9678905880.

The spelling of 12972556 in words is "twelve million, nine hundred seventy-two thousand, five hundred fifty-six".