90652820 has 18 divisors (see below), whose sum is σ = 190460382. Its totient is φ = 36244096.

The previous prime is 90652759. The next prime is 90652829. The reversal of 90652820 is 2825609.

It can be written as a sum of positive squares in 3 ways, for example, as 364816 + 90288004 = 604^2 + 9502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90652829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41516 + ... + 43644.

Almost surely, 2^90652820 is an apocalyptic number.

It is an amenable number.

90652820 is an abundant number, since it is smaller than the sum of its proper divisors (99807562).

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

90652820 is an equidigital number, since it uses as much as digits as its factorization.

90652820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 90652820 is about 9521.1774481941. The cubic root of 90652820 is about 449.2214026061.

The spelling of 90652820 in words is "ninety million, six hundred fifty-two thousand, eight hundred twenty".