89990560 has 48 divisors (see below), whose sum is σ = 231934752. Its totient is φ = 32723200.

The previous prime is 89990543. The next prime is 89990561. The reversal of 89990560 is 6509998.

It is a happy number.

It is a super-2 number, since 2×89990560² = 16196601778227200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89990560.

It is not an unprimeable number, because it can be changed into a prime (89990561) 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, 23806 + ... + 27325.

It is an arithmetic number, because the mean of its divisors is an integer number (4831974).

Almost surely, 2^89990560 is an apocalyptic number.

89990560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89990560 is an abundant number, since it is smaller than the sum of its proper divisors (141944192).

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

89990560 is a wasteful number, since it uses less digits than its factorization.

89990560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51157 (or 51149 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 89990560 is about 9486.3354357729. The cubic root of 89990560 is about 448.1248057891.

The spelling of 89990560 in words is "eighty-nine million, nine hundred ninety thousand, five hundred sixty".