90982820 has 48 divisors (see below), whose sum is σ = 195915888. Its totient is φ = 35481600.

The previous prime is 90982819. The next prime is 90982847. The reversal of 90982820 is 2828909.

It can be written as a sum of positive squares in 8 ways, for example, as 238144 + 90744676 = 488^2 + 9526^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147152 + ... + 147768.

It is an arithmetic number, because the mean of its divisors is an integer number (4081581).

Almost surely, 2^90982820 is an apocalyptic number.

It is an amenable number.

90982820 is an abundant number, since it is smaller than the sum of its proper divisors (104933068).

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

90982820 is a wasteful number, since it uses less digits than its factorization.

90982820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 90982820 is about 9538.4914949902. The cubic root of 90982820 is about 449.7658370193.

The spelling of 90982820 in words is "ninety million, nine hundred eighty-two thousand, eight hundred twenty".