80900928 has 42 divisors (see below), whose sum is σ = 231889554. Its totient is φ = 26966784.

The previous prime is 80900921. The next prime is 80900929. The reversal of 80900928 is 82900908.

It can be written as a sum of positive squares in only one way, i.e., 75481344 + 5419584 = 8688^2 + 2328^2 .

It is a super-2 number, since 2×80900928² = 13089920302522368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80900892 and 80900901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80900921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69651 + ... + 70802.

Almost surely, 2^80900928 is an apocalyptic number.

It is an amenable number.

80900928 is an abundant number, since it is smaller than the sum of its proper divisors (150988626).

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

80900928 is a wasteful number, since it uses less digits than its factorization.

80900928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140471 (or 140458 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 80900928 is about 8994.4943159691. The cubic root of 80900928 is about 432.4983959757.

The spelling of 80900928 in words is "eighty million, nine hundred thousand, nine hundred twenty-eight".