82644804 has 36 divisors (see below), whose sum is σ = 227900400. Its totient is φ = 25043760.

The previous prime is 82644799. The next prime is 82644811. The reversal of 82644804 is 40844628.

82644804 is a `hidden beast` number, since 8 + 2 + 644 + 8 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

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 11 ways as a sum of consecutive naturals, for example, 103954 + ... + 104745.

Almost surely, 2^82644804 is an apocalyptic number.

It is an amenable number.

82644804 is an abundant number, since it is smaller than the sum of its proper divisors (145255596).

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

82644804 is a wasteful number, since it uses less digits than its factorization.

82644804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208720 (or 208715 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 82644804 is about 9090.9187654494. The cubic root of 82644804 is about 435.5839324012.

The spelling of 82644804 in words is "eighty-two million, six hundred forty-four thousand, eight hundred four".