90817488 has 30 divisors (see below), whose sum is σ = 254163234. Its totient is φ = 30272448.

The previous prime is 90817487. The next prime is 90817523. The reversal of 90817488 is 88471809.

90817488 is a `hidden beast` number, since 90 + 81 + 7 + 488 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46621584 + 44195904 = 6828^2 + 6648^2 .

It is a super-2 number, since 2×90817488² = 16495632253260288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90817487) 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 5 ways as a sum of consecutive naturals, for example, 315195 + ... + 315482.

Almost surely, 2^90817488 is an apocalyptic number.

It is an amenable number.

90817488 is an abundant number, since it is smaller than the sum of its proper divisors (163345746).

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

90817488 is a wasteful number, since it uses less digits than its factorization.

90817488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630691 (or 630682 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 90817488 is about 9529.8209846775. The cubic root of 90817488 is about 449.4932369354.

The spelling of 90817488 in words is "ninety million, eight hundred seventeen thousand, four hundred eighty-eight".