90418560 has 64 divisors (see below), whose sum is σ = 288215280. Its totient is φ = 24111104.

The previous prime is 90418547. The next prime is 90418567. The reversal of 90418560 is 6581409.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90418567) 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, 21627 + ... + 25466.

Almost surely, 2^90418560 is an apocalyptic number.

It is an amenable number.

90418560 is an abundant number, since it is smaller than the sum of its proper divisors (197796720).

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

90418560 is a wasteful number, since it uses less digits than its factorization.

90418560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47115 (or 47103 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 90418560 is about 9508.8674404474. The cubic root of 90418560 is about 448.8341177859.

Adding to 90418560 its reverse (6581409), we get a palindrome (96999969).

The spelling of 90418560 in words is "ninety million, four hundred eighteen thousand, five hundred sixty".