90232285440 has 144 divisors (see below), whose sum is σ = 314377632576. Its totient is φ = 21874483200.

The previous prime is 90232285439. The next prime is 90232285441. The reversal of 90232285440 is 4458223209.

It is an interprime number because it is at equal distance from previous prime (90232285439) and next prime (90232285441).

It is not an unprimeable number, because it can be changed into a prime (90232285441) 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 15 ways as a sum of consecutive naturals, for example, 1025851 + ... + 1110330.

It is an arithmetic number, because the mean of its divisors is an integer number (2183178004).

Almost surely, 2^90232285440 is an apocalyptic number.

It is an amenable number.

90232285440 is an abundant number, since it is smaller than the sum of its proper divisors (224145347136).

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

90232285440 is a wasteful number, since it uses less digits than its factorization.

90232285440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136216 (or 2136202 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 90232285440 in words is "ninety billion, two hundred thirty-two million, two hundred eighty-five thousand, four hundred forty".