78904572 has 48 divisors (see below), whose sum is σ = 191826432. Its totient is φ = 25220160.

The previous prime is 78904571. The next prime is 78904577. The reversal of 78904572 is 27540987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78904571) 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, 30273 + ... + 32775.

It is an arithmetic number, because the mean of its divisors is an integer number (3996384).

Almost surely, 2^78904572 is an apocalyptic number.

It is an amenable number.

78904572 is an abundant number, since it is smaller than the sum of its proper divisors (112921860).

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

78904572 is a wasteful number, since it uses less digits than its factorization.

78904572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618 (or 2616 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 78904572 is about 8882.8245507834. The cubic root of 78904572 is about 428.9112024906.

The spelling of 78904572 in words is "seventy-eight million, nine hundred four thousand, five hundred seventy-two".