72437880 has 64 divisors (see below), whose sum is σ = 228758400. Its totient is φ = 18299520.

The previous prime is 72437873. The next prime is 72437881. The reversal of 72437880 is 8873427.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72437881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13606 + ... + 18165.

It is an arithmetic number, because the mean of its divisors is an integer number (3574350).

Almost surely, 2^72437880 is an apocalyptic number.

It is an amenable number.

72437880 is an abundant number, since it is smaller than the sum of its proper divisors (156320520).

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

72437880 is a wasteful number, since it uses less digits than its factorization.

72437880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31804 (or 31800 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 72437880 is about 8511.0445892382. The cubic root of 72437880 is about 416.8584191186.

The spelling of 72437880 in words is "seventy-two million, four hundred thirty-seven thousand, eight hundred eighty".