72387680 has 48 divisors (see below), whose sum is σ = 171551520. Its totient is φ = 28864512.

The previous prime is 72387617. The next prime is 72387709. The reversal of 72387680 is 8678327.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77456 + ... + 78384.

It is an arithmetic number, because the mean of its divisors is an integer number (3573990).

Almost surely, 2^72387680 is an apocalyptic number.

It is an amenable number.

72387680 is an abundant number, since it is smaller than the sum of its proper divisors (99163840).

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

72387680 is a wasteful number, since it uses less digits than its factorization.

72387680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1423 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 72387680 is about 8508.0949689105. The cubic root of 72387680 is about 416.7621015174.

The spelling of 72387680 in words is "seventy-two million, three hundred eighty-seven thousand, six hundred eighty".