79297920 has 256 divisors, whose sum is σ = 303307200. Its totient is φ = 19464192.

The previous prime is 79297913. The next prime is 79297937. The reversal of 79297920 is 2979297.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224464 + ... + 224816.

Almost surely, 2^79297920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79297920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151653600).

79297920 is an abundant number, since it is smaller than the sum of its proper divisors (224009280).

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

79297920 is a wasteful number, since it uses less digits than its factorization.

79297920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 79297920 is about 8904.9379559882. The cubic root of 79297920 is about 429.6227446527.

The spelling of 79297920 in words is "seventy-nine million, two hundred ninety-seven thousand, nine hundred twenty".