82420904 has 32 divisors (see below), whose sum is σ = 159408480. Its totient is φ = 39921984.

The previous prime is 82420889. The next prime is 82420967. The reversal of 82420904 is 40902428.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90419 + ... + 91325.

It is an arithmetic number, because the mean of its divisors is an integer number (4981515).

Almost surely, 2^82420904 is an apocalyptic number.

It is an amenable number.

82420904 is a deficient number, since it is larger than the sum of its proper divisors (76987576).

82420904 is a wasteful number, since it uses less digits than its factorization.

82420904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1253 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 82420904 is about 9078.5959266838. The cubic root of 82420904 is about 435.1902175975.

The spelling of 82420904 in words is "eighty-two million, four hundred twenty thousand, nine hundred four".