73131972 has 24 divisors (see below), whose sum is σ = 171667776. Its totient is φ = 24230688.

The previous prime is 73131937. The next prime is 73131983. The reversal of 73131972 is 27913137.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16243 + ... + 20250.

It is an arithmetic number, because the mean of its divisors is an integer number (7152824).

Almost surely, 2^73131972 is an apocalyptic number.

It is an amenable number.

73131972 is an abundant number, since it is smaller than the sum of its proper divisors (98535804).

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

73131972 is a wasteful number, since it uses less digits than its factorization.

73131972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36667 (or 36665 counting only the distinct ones).

The product of its digits is 7938, while the sum is 33.

The square root of 73131972 is about 8551.7233350945. The cubic root of 73131972 is about 418.1856199631.

The spelling of 73131972 in words is "seventy-three million, one hundred thirty-one thousand, nine hundred seventy-two".