72280368 has 30 divisors (see below), whose sum is σ = 202285044. Its totient is φ = 24093408.

The previous prime is 72280367. The next prime is 72280391. The reversal of 72280368 is 86308227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (72280361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250830 + ... + 251117.

Almost surely, 2^72280368 is an apocalyptic number.

It is an amenable number.

72280368 is an abundant number, since it is smaller than the sum of its proper divisors (130004676).

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

72280368 is a wasteful number, since it uses less digits than its factorization.

72280368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501961 (or 501952 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 72280368 is about 8501.7861652714. The cubic root of 72280368 is about 416.5560549765.

The spelling of 72280368 in words is "seventy-two million, two hundred eighty thousand, three hundred sixty-eight".