82576404 has 18 divisors (see below), whose sum is σ = 208734890. Its totient is φ = 27525456.

The previous prime is 82576399. The next prime is 82576433. The reversal of 82576404 is 40467528.

82576404 is a `hidden beast` number, since 8 + 2 + 5 + 7 + 640 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 82083600 + 492804 = 9060^2 + 702^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2293789 = 82576404 / (8 + 2 + 5 + 7 + 6 + 4 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1146859 + ... + 1146930.

Almost surely, 2^82576404 is an apocalyptic number.

It is an amenable number.

82576404 is an abundant number, since it is smaller than the sum of its proper divisors (126158486).

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

82576404 is a wasteful number, since it uses less digits than its factorization.

82576404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293799 (or 2293794 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 82576404 is about 9087.1559907377. The cubic root of 82576404 is about 435.4637305944.

The spelling of 82576404 in words is "eighty-two million, five hundred seventy-six thousand, four hundred four".