90288560 has 40 divisors (see below), whose sum is σ = 215048736. Its totient is φ = 35233280.

The previous prime is 90288557. The next prime is 90288563. The reversal of 90288560 is 6588209.

It is an interprime number because it is at equal distance from previous prime (90288557) and next prime (90288563).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (90288563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10484 + ... + 17043.

Almost surely, 2^90288560 is an apocalyptic number.

It is an amenable number.

90288560 is an abundant number, since it is smaller than the sum of its proper divisors (124760176).

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

90288560 is a wasteful number, since it uses less digits than its factorization.

90288560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27581 (or 27575 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 90288560 is about 9502.0292569535. The cubic root of 90288560 is about 448.6189096793.

The spelling of 90288560 in words is "ninety million, two hundred eighty-eight thousand, five hundred sixty".