79982220 has 48 divisors (see below), whose sum is σ = 224340480. Its totient is φ = 21291456.

The previous prime is 79982219. The next prime is 79982233. The reversal of 79982220 is 2228997.

It is a super-2 number, since 2×79982220² = 12794311032256800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 61699 + ... + 62981.

It is an arithmetic number, because the mean of its divisors is an integer number (4673760).

Almost surely, 2^79982220 is an apocalyptic number.

It is an amenable number.

79982220 is an abundant number, since it is smaller than the sum of its proper divisors (144358260).

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

79982220 is a wasteful number, since it uses less digits than its factorization.

79982220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334 (or 2332 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 79982220 is about 8943.2779225517. The cubic root of 79982220 is about 430.8550141006.

The spelling of 79982220 in words is "seventy-nine million, nine hundred eighty-two thousand, two hundred twenty".