82421608 has 16 divisors (see below), whose sum is σ = 155397060. Its totient is φ = 40982400.

The previous prime is 82421587. The next prime is 82421609. The reversal of 82421608 is 80612428.

It can be written as a sum of positive squares in 2 ways, for example, as 81685444 + 736164 = 9038^2 + 858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 82421608.

It is not an unprimeable number, because it can be changed into a prime (82421609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27013 + ... + 29908.

Almost surely, 2^82421608 is an apocalyptic number.

It is an amenable number.

82421608 is a deficient number, since it is larger than the sum of its proper divisors (72975452).

82421608 is a wasteful number, since it uses less digits than its factorization.

82421608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57108 (or 57104 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 82421608 is about 9078.6346991164. The cubic root of 82421608 is about 435.1914566563.

The spelling of 82421608 in words is "eighty-two million, four hundred twenty-one thousand, six hundred eight".