79221580 has 24 divisors (see below), whose sum is σ = 167218128. Its totient is φ = 31526208.

The previous prime is 79221559. The next prime is 79221599. The reversal of 79221580 is 8512297.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6114 + ... + 13993.

It is an arithmetic number, because the mean of its divisors is an integer number (6967422).

Almost surely, 2^79221580 is an apocalyptic number.

It is an amenable number.

79221580 is an abundant number, since it is smaller than the sum of its proper divisors (87996548).

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

79221580 is a wasteful number, since it uses less digits than its factorization.

79221580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20313 (or 20311 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 79221580 is about 8900.6505380225. The cubic root of 79221580 is about 429.4848346435.

The spelling of 79221580 in words is "seventy-nine million, two hundred twenty-one thousand, five hundred eighty".