79972800 has 84 divisors (see below), whose sum is σ = 262393176. Its totient is φ = 21324800.

The previous prime is 79972759. The next prime is 79972829. The reversal of 79972800 is 827997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3531 + ... + 13130.

Almost surely, 2^79972800 is an apocalyptic number.

It is an amenable number.

79972800 is an abundant number, since it is smaller than the sum of its proper divisors (182420376).

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

79972800 is a wasteful number, since it uses less digits than its factorization.

79972800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16686 (or 16671 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 79972800 is about 8942.7512545078. The cubic root of 79972800 is about 430.8380986179.

The spelling of 79972800 in words is "seventy-nine million, nine hundred seventy-two thousand, eight hundred".