72330840 has 64 divisors (see below), whose sum is σ = 241106400. Its totient is φ = 19287936.

The previous prime is 72330829. The next prime is 72330887. The reversal of 72330840 is 4803327.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 32407 + ... + 34566.

Almost surely, 2^72330840 is an apocalyptic number.

It is an amenable number.

72330840 is an abundant number, since it is smaller than the sum of its proper divisors (168775560).

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

72330840 is a wasteful number, since it uses less digits than its factorization.

72330840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66993 (or 66983 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 72330840 is about 8504.7539646953. The cubic root of 72330840 is about 416.6529901289.

The spelling of 72330840 in words is "seventy-two million, three hundred thirty thousand, eight hundred forty".