72973956 has 24 divisors (see below), whose sum is σ = 185752224. Its totient is φ = 22113280.

The previous prime is 72973909. The next prime is 72973991. The reversal of 72973956 is 65937927.

It is an unprimeable number.

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, 276285 + ... + 276548.

It is an arithmetic number, because the mean of its divisors is an integer number (7739676).

Almost surely, 2^72973956 is an apocalyptic number.

It is an amenable number.

72973956 is an abundant number, since it is smaller than the sum of its proper divisors (112778268).

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

72973956 is a wasteful number, since it uses less digits than its factorization.

72973956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552851 (or 552849 counting only the distinct ones).

The product of its digits is 714420, while the sum is 48.

The square root of 72973956 is about 8542.4794995364. The cubic root of 72973956 is about 417.8842120322.

The spelling of 72973956 in words is "seventy-two million, nine hundred seventy-three thousand, nine hundred fifty-six".