82900020 has 48 divisors (see below), whose sum is σ = 265281408. Its totient is φ = 18948480.

The previous prime is 82900019. The next prime is 82900033. The reversal of 82900020 is 2000928.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 82900020.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 98271 + ... + 99110.

It is an arithmetic number, because the mean of its divisors is an integer number (5526696).

Almost surely, 2^82900020 is an apocalyptic number.

It is an amenable number.

82900020 is an abundant number, since it is smaller than the sum of its proper divisors (182381388).

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

82900020 is a wasteful number, since it uses less digits than its factorization.

82900020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197400 (or 197398 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 82900020 is about 9104.9448103764. The cubic root of 82900020 is about 436.0318482473.

Adding to 82900020 its reverse (2000928), we get a palindrome (84900948).

The spelling of 82900020 in words is "eighty-two million, nine hundred thousand, twenty".