72327970 has 64 divisors (see below), whose sum is σ = 157199616. Its totient is φ = 23604480.

The previous prime is 72327961. The next prime is 72327973. The reversal of 72327970 is 7972327.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (72327973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52227 + ... + 53593.

It is an arithmetic number, because the mean of its divisors is an integer number (2456244).

Almost surely, 2^72327970 is an apocalyptic number.

72327970 is an abundant number, since it is smaller than the sum of its proper divisors (84871646).

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

72327970 is a wasteful number, since it uses less digits than its factorization.

72327970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 72327970 is about 8504.5852338606. The cubic root of 72327970 is about 416.6474792942.

The spelling of 72327970 in words is "seventy-two million, three hundred twenty-seven thousand, nine hundred seventy".