72782680 has 32 divisors (see below), whose sum is σ = 164157840. Its totient is φ = 29042560.

The previous prime is 72782669. The next prime is 72782681. The reversal of 72782680 is 8628727.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72782681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16467 + ... + 20413.

Almost surely, 2^72782680 is an apocalyptic number.

It is an amenable number.

72782680 is an abundant number, since it is smaller than the sum of its proper divisors (91375160).

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

72782680 is a wasteful number, since it uses less digits than its factorization.

72782680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419 (or 4415 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 72782680 is about 8531.2765750502. The cubic root of 72782680 is about 417.5187795585.

The spelling of 72782680 in words is "seventy-two million, seven hundred eighty-two thousand, six hundred eighty".