11972972 has 24 divisors (see below), whose sum is σ = 23853312. Its totient is φ = 5205200.

The previous prime is 11972971. The next prime is 11972993. The reversal of 11972972 is 27927911.

It is not an unprimeable number, because it can be changed into a prime (11972971) 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 7 ways as a sum of consecutive naturals, for example, 4904 + ... + 6927.

It is an arithmetic number, because the mean of its divisors is an integer number (993888).

Almost surely, 2^11972972 is an apocalyptic number.

It is an amenable number.

11972972 is a deficient number, since it is larger than the sum of its proper divisors (11880340).

11972972 is a wasteful number, since it uses less digits than its factorization.

11972972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11869 (or 11867 counting only the distinct ones).

The product of its digits is 15876, while the sum is 38.

The square root of 11972972 is about 3460.1982602157. The cubic root of 11972972 is about 228.7708340983.

The spelling of 11972972 in words is "eleven million, nine hundred seventy-two thousand, nine hundred seventy-two".