79830720 has 168 divisors, whose sum is σ = 280300176. Its totient is φ = 20846592.

The previous prime is 79830713. The next prime is 79830721. The reversal of 79830720 is 2703897.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (79830721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152379 + ... + 152901.

Almost surely, 2^79830720 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 79830720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140150088).

79830720 is an abundant number, since it is smaller than the sum of its proper divisors (200469456).

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

79830720 is a wasteful number, since it uses less digits than its factorization.

79830720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 79830720 is about 8934.8038590671. The cubic root of 79830720 is about 430.5828044696.

The spelling of 79830720 in words is "seventy-nine million, eight hundred thirty thousand, seven hundred twenty".