72452980 has 24 divisors (see below), whose sum is σ = 161102088. Its totient is φ = 27276288.

The previous prime is 72452977. The next prime is 72453019. The reversal of 72452980 is 8925427.

It can be written as a sum of positive squares in 4 ways, for example, as 38019556 + 34433424 = 6166^2 + 5868^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 106209 + ... + 106888.

It is an arithmetic number, because the mean of its divisors is an integer number (6712587).

Almost surely, 2^72452980 is an apocalyptic number.

It is an amenable number.

72452980 is an abundant number, since it is smaller than the sum of its proper divisors (88649108).

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

72452980 is a wasteful number, since it uses less digits than its factorization.

72452980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213123 (or 213121 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 72452980 is about 8511.9316256652. The cubic root of 72452980 is about 416.8873824400.

The spelling of 72452980 in words is "seventy-two million, four hundred fifty-two thousand, nine hundred eighty".