90387560 has 32 divisors (see below), whose sum is σ = 214077600. Its totient is φ = 34251840.

The previous prime is 90387529. The next prime is 90387571. The reversal of 90387560 is 6578309.

It is a super-2 number, since 2×90387560² = 16339822005507200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58706 + ... + 60225.

It is an arithmetic number, because the mean of its divisors is an integer number (6689925).

Almost surely, 2^90387560 is an apocalyptic number.

It is an amenable number.

90387560 is an abundant number, since it is smaller than the sum of its proper divisors (123690040).

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

90387560 is a wasteful number, since it uses less digits than its factorization.

90387560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118961 (or 118957 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 90387560 is about 9507.2372432795. The cubic root of 90387560 is about 448.7828176691.

The spelling of 90387560 in words is "ninety million, three hundred eighty-seven thousand, five hundred sixty".