80863980 has 24 divisors (see below), whose sum is σ = 226419312. Its totient is φ = 21563712.

The previous prime is 80863967. The next prime is 80863987. The reversal of 80863980 is 8936808.

It is a super-2 number, since 2×80863980² = 13077966522880800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80863987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673807 + ... + 673926.

It is an arithmetic number, because the mean of its divisors is an integer number (9434138).

Almost surely, 2^80863980 is an apocalyptic number.

It is an amenable number.

80863980 is an abundant number, since it is smaller than the sum of its proper divisors (145555332).

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

80863980 is a wasteful number, since it uses less digits than its factorization.

80863980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347745 (or 1347743 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 80863980 is about 8992.4401582663. The cubic root of 80863980 is about 432.4325443039.

The spelling of 80863980 in words is "eighty million, eight hundred sixty-three thousand, nine hundred eighty".