90492020 has 24 divisors (see below), whose sum is σ = 201212424. Its totient is φ = 34067456.

The previous prime is 90492011. The next prime is 90492029. The reversal of 90492020 is 2029409.

It is an interprime number because it is at equal distance from previous prime (90492011) and next prime (90492029).

It can be written as a sum of positive squares in 4 ways, for example, as 25786084 + 64705936 = 5078^2 + 8044^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90492029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 132737 + ... + 133416.

It is an arithmetic number, because the mean of its divisors is an integer number (8383851).

Almost surely, 2^90492020 is an apocalyptic number.

It is an amenable number.

90492020 is an abundant number, since it is smaller than the sum of its proper divisors (110720404).

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

90492020 is a wasteful number, since it uses less digits than its factorization.

90492020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266179 (or 266177 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 90492020 is about 9512.7293664857. The cubic root of 90492020 is about 448.9556357176.

The spelling of 90492020 in words is "ninety million, four hundred ninety-two thousand, twenty".