78572860 has 24 divisors (see below), whose sum is σ = 167330016. Its totient is φ = 30985920.

The previous prime is 78572831. The next prime is 78572869. The reversal of 78572860 is 6827587.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78572869) 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, 26247 + ... + 29086.

It is an arithmetic number, because the mean of its divisors is an integer number (6972084).

Almost surely, 2^78572860 is an apocalyptic number.

It is an amenable number.

78572860 is an abundant number, since it is smaller than the sum of its proper divisors (88757156).

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

78572860 is a wasteful number, since it uses less digits than its factorization.

78572860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55413 (or 55411 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 78572860 is about 8864.1333473724. The cubic root of 78572860 is about 428.3093158101.

The spelling of 78572860 in words is "seventy-eight million, five hundred seventy-two thousand, eight hundred sixty".