72472956 has 12 divisors (see below), whose sum is σ = 169103592. Its totient is φ = 24157648.

The previous prime is 72472949. The next prime is 72472969. The reversal of 72472956 is 65927427.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3019695 + ... + 3019718.

It is an arithmetic number, because the mean of its divisors is an integer number (14091966).

Almost surely, 2^72472956 is an apocalyptic number.

It is an amenable number.

72472956 is an abundant number, since it is smaller than the sum of its proper divisors (96630636).

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

72472956 is a wasteful number, since it uses less digits than its factorization.

72472956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6039420 (or 6039418 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 72472956 is about 8513.1049564774. The cubic root of 72472956 is about 416.9256922382.

The spelling of 72472956 in words is "seventy-two million, four hundred seventy-two thousand, nine hundred fifty-six".