79791270 has 64 divisors (see below), whose sum is σ = 208232640. Its totient is φ = 19450368.

The previous prime is 79791247. The next prime is 79791281. The reversal of 79791270 is 7219797.

It is a Curzon number.

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, 41572 + ... + 43448.

It is an arithmetic number, because the mean of its divisors is an integer number (3253635).

Almost surely, 2^79791270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79791270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104116320).

79791270 is an abundant number, since it is smaller than the sum of its proper divisors (128441370).

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

79791270 is a wasteful number, since it uses less digits than its factorization.

79791270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009.

The product of its (nonzero) digits is 55566, while the sum is 42.

The square root of 79791270 is about 8932.5959272767. The cubic root of 79791270 is about 430.5118656527.

The spelling of 79791270 in words is "seventy-nine million, seven hundred ninety-one thousand, two hundred seventy".