74638972 has 12 divisors (see below), whose sum is σ = 130984560. Its totient is φ = 37214816.

The previous prime is 74638951. The next prime is 74638997. The reversal of 74638972 is 27983647.

It is a super-2 number, since 2×74638972² = 11141952282433568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24553 + ... + 27424.

It is an arithmetic number, because the mean of its divisors is an integer number (10915380).

Almost surely, 2^74638972 is an apocalyptic number.

It is an amenable number.

74638972 is a deficient number, since it is larger than the sum of its proper divisors (56345588).

74638972 is a wasteful number, since it uses less digits than its factorization.

74638972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52340 (or 52338 counting only the distinct ones).

The product of its digits is 508032, while the sum is 46.

The square root of 74638972 is about 8639.3849318108. The cubic root of 74638972 is about 421.0385710623.

The spelling of 74638972 in words is "seventy-four million, six hundred thirty-eight thousand, nine hundred seventy-two".