80993856 has 56 divisors (see below), whose sum is σ = 223625664. Its totient is φ = 25822720.

The previous prime is 80993837. The next prime is 80993863. The reversal of 80993856 is 65839908.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4755 + ... + 13586.

Almost surely, 2^80993856 is an apocalyptic number.

It is an amenable number.

80993856 is an abundant number, since it is smaller than the sum of its proper divisors (142631808).

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

80993856 is a wasteful number, since it uses less digits than its factorization.

80993856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18379 (or 18369 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 80993856 is about 8999.6586601937. The cubic root of 80993856 is about 432.6639310855.

The spelling of 80993856 in words is "eighty million, nine hundred ninety-three thousand, eight hundred fifty-six".