79819280 has 20 divisors (see below), whose sum is σ = 185580012. Its totient is φ = 31927680.

The previous prime is 79819277. The next prime is 79819291. The reversal of 79819280 is 8291897.

It can be written as a sum of positive squares in 2 ways, for example, as 11723776 + 68095504 = 3424^2 + 8252^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×79819280² = 12742234919436800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498791 + ... + 498950.

Almost surely, 2^79819280 is an apocalyptic number.

It is an amenable number.

79819280 is an abundant number, since it is smaller than the sum of its proper divisors (105760732).

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

79819280 is a wasteful number, since it uses less digits than its factorization.

79819280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997754 (or 997748 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 79819280 is about 8934.1636430054. The cubic root of 79819280 is about 430.5622355182.

The spelling of 79819280 in words is "seventy-nine million, eight hundred nineteen thousand, two hundred eighty".