79180890 has 32 divisors (see below), whose sum is σ = 190270080. Its totient is φ = 21088704.

The previous prime is 79180877. The next prime is 79180901. The reversal of 79180890 is 9808197.

It is a super-2 number, since 2×79180890² = 12539226682384200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41947 + ... + 43793.

It is an arithmetic number, because the mean of its divisors is an integer number (5945940).

Almost surely, 2^79180890 is an apocalyptic number.

79180890 is an abundant number, since it is smaller than the sum of its proper divisors (111089190).

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

79180890 is a wasteful number, since it uses less digits than its factorization.

79180890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 79180890 is about 8898.3644564605. The cubic root of 79180890 is about 429.4112910006.

The spelling of 79180890 in words is "seventy-nine million, one hundred eighty thousand, eight hundred ninety".