72370916 has 6 divisors (see below), whose sum is σ = 126649110. Its totient is φ = 36185456.

The previous prime is 72370913. The next prime is 72370933. The reversal of 72370916 is 61907327.

It can be written as a sum of positive squares in only one way, i.e., 72318016 + 52900 = 8504^2 + 230^2 .

It is not an unprimeable number, because it can be changed into a prime (72370913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9046361 + ... + 9046368.

It is an arithmetic number, because the mean of its divisors is an integer number (21108185).

Almost surely, 2^72370916 is an apocalyptic number.

It is an amenable number.

72370916 is a deficient number, since it is larger than the sum of its proper divisors (54278194).

72370916 is a wasteful number, since it uses less digits than its factorization.

72370916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18092733 (or 18092731 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 72370916 is about 8507.1097324532. The cubic root of 72370916 is about 416.7299268928.

The spelling of 72370916 in words is "seventy-two million, three hundred seventy thousand, nine hundred sixteen".