79210290 has 16 divisors (see below), whose sum is σ = 190104768. Its totient is φ = 21122736.

The previous prime is 79210289. The next prime is 79210309. The reversal of 79210290 is 9201297.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2640343 = 79210290 / (7 + 9 + 2 + 1 + 0 + 2 + 9 + 0).

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, 1320142 + ... + 1320201.

It is an arithmetic number, because the mean of its divisors is an integer number (11881548).

Almost surely, 2^79210290 is an apocalyptic number.

79210290 is an abundant number, since it is smaller than the sum of its proper divisors (110894478).

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

79210290 is a wasteful number, since it uses less digits than its factorization.

79210290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640353.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 79210290 is about 8900.0162921199. The cubic root of 79210290 is about 429.4644314733.

The spelling of 79210290 in words is "seventy-nine million, two hundred ten thousand, two hundred ninety".