80576388 has 18 divisors (see below), whose sum is σ = 203679294. Its totient is φ = 26858784.

The previous prime is 80576381. The next prime is 80576389. The reversal of 80576388 is 88367508.

80576388 is a `hidden beast` number, since 8 + 0 + 5 + 7 + 638 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61496964 + 19079424 = 7842^2 + 4368^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (80576381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1119081 + ... + 1119152.

Almost surely, 2^80576388 is an apocalyptic number.

It is an amenable number.

80576388 is an abundant number, since it is smaller than the sum of its proper divisors (123102906).

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

80576388 is a wasteful number, since it uses less digits than its factorization.

80576388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238243 (or 2238238 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 80576388 is about 8976.4351498799. The cubic root of 80576388 is about 431.9192879048.

The spelling of 80576388 in words is "eighty million, five hundred seventy-six thousand, three hundred eighty-eight".