80992976 has 20 divisors (see below), whose sum is σ = 158316132. Its totient is φ = 40137216.

The previous prime is 80992943. The next prime is 80992979. The reversal of 80992976 is 67929908.

It can be written as a sum of positive squares in 2 ways, for example, as 9759376 + 71233600 = 3124^2 + 8440^2 .

It is a super-2 number, since 2×80992976² = 13119724322673152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80992979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20591 + ... + 24206.

Almost surely, 2^80992976 is an apocalyptic number.

It is an amenable number.

80992976 is a deficient number, since it is larger than the sum of its proper divisors (77323156).

80992976 is a wasteful number, since it uses less digits than its factorization.

80992976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44918 (or 44912 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 80992976 is about 8999.6097693178. The cubic root of 80992976 is about 432.6623641122.

The spelling of 80992976 in words is "eighty million, nine hundred ninety-two thousand, nine hundred seventy-six".