72302972 has 24 divisors (see below), whose sum is σ = 153113184. Its totient is φ = 29164032.

The previous prime is 72302963. The next prime is 72302987. The reversal of 72302972 is 27920327.

It is a congruent number.

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, 75473 + ... + 76424.

It is an arithmetic number, because the mean of its divisors is an integer number (6379716).

Almost surely, 2^72302972 is an apocalyptic number.

It is an amenable number.

72302972 is an abundant number, since it is smaller than the sum of its proper divisors (80810212).

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

72302972 is a wasteful number, since it uses less digits than its factorization.

72302972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151925 (or 151923 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 72302972 is about 8503.1154290648. The cubic root of 72302972 is about 416.5994731824.

The spelling of 72302972 in words is "seventy-two million, three hundred two thousand, nine hundred seventy-two".