82405984 has 12 divisors (see below), whose sum is σ = 162236844. Its totient is φ = 41202976.

The previous prime is 82405979. The next prime is 82405991. The reversal of 82405984 is 48950428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1287562 + ... + 1287625.

It is an arithmetic number, because the mean of its divisors is an integer number (13519737).

Almost surely, 2^82405984 is an apocalyptic number.

It is an amenable number.

82405984 is a deficient number, since it is larger than the sum of its proper divisors (79830860).

82405984 is a wasteful number, since it uses less digits than its factorization.

82405984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575197 (or 2575189 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 82405984 is about 9077.7741765259. The cubic root of 82405984 is about 435.1639563395.

The spelling of 82405984 in words is "eighty-two million, four hundred five thousand, nine hundred eighty-four".