79471920 has 80 divisors (see below), whose sum is σ = 268768512. Its totient is φ = 19265280.

The previous prime is 79471913. The next prime is 79471937. The reversal of 79471920 is 2917497.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12412 + ... + 17691.

Almost surely, 2^79471920 is an apocalyptic number.

It is an amenable number.

79471920 is an abundant number, since it is smaller than the sum of its proper divisors (189296592).

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

79471920 is a wasteful number, since it uses less digits than its factorization.

79471920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30130 (or 30124 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 79471920 is about 8914.7024627858. The cubic root of 79471920 is about 429.9367493049.

The spelling of 79471920 in words is "seventy-nine million, four hundred seventy-one thousand, nine hundred twenty".