80856928 has 24 divisors (see below), whose sum is σ = 164324160. Its totient is φ = 39123840.

The previous prime is 80856911. The next prime is 80856929. The reversal of 80856928 is 82965808.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80856929) 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, 39763 + ... + 41746.

It is an arithmetic number, because the mean of its divisors is an integer number (6846840).

Almost surely, 2^80856928 is an apocalyptic number.

It is an amenable number.

80856928 is an abundant number, since it is smaller than the sum of its proper divisors (83467232).

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

80856928 is a wasteful number, since it uses less digits than its factorization.

80856928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81550 (or 81542 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 80856928 is about 8992.0480425763. The cubic root of 80856928 is about 432.4199733877.

The spelling of 80856928 in words is "eighty million, eight hundred fifty-six thousand, nine hundred twenty-eight".