72664930 has 96 divisors (see below), whose sum is σ = 156003840. Its totient is φ = 24261120.

The previous prime is 72664909. The next prime is 72664939. The reversal of 72664930 is 3946627.

It is a self number, because there is not a number n which added to its sum of digits gives 72664930.

It is not an unprimeable number, because it can be changed into a prime (72664939) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 995374 + ... + 995446.

It is an arithmetic number, because the mean of its divisors is an integer number (1625040).

Almost surely, 2^72664930 is an apocalyptic number.

72664930 is an abundant number, since it is smaller than the sum of its proper divisors (83338910).

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

72664930 is a wasteful number, since it uses less digits than its factorization.

72664930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 72664930 is about 8524.3727041935. The cubic root of 72664930 is about 417.2934998971.

It can be divided in two parts, 726 and 64930, that added together give a palindrome (65656).

The spelling of 72664930 in words is "seventy-two million, six hundred sixty-four thousand, nine hundred thirty".