72507630 has 32 divisors (see below), whose sum is σ = 187405344. Its totient is φ = 17847936.

The previous prime is 72507619. The next prime is 72507647. The reversal of 72507630 is 3670527.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92569 + ... + 93348.

It is an arithmetic number, because the mean of its divisors is an integer number (5856417).

Almost surely, 2^72507630 is an apocalyptic number.

72507630 is an abundant number, since it is smaller than the sum of its proper divisors (114897714).

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

72507630 is a wasteful number, since it uses less digits than its factorization.

72507630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185940.

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 72507630 is about 8515.1412202030. The cubic root of 72507630 is about 416.9921730210.

It can be divided in two parts, 72507 and 630, that added together give a palindrome (73137).

The spelling of 72507630 in words is "seventy-two million, five hundred seven thousand, six hundred thirty".