89988720 has 40 divisors (see below), whose sum is σ = 278965776. Its totient is φ = 23996928.

The previous prime is 89988709. The next prime is 89988721. The reversal of 89988720 is 2788998.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89988721) 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, 187237 + ... + 187716.

Almost surely, 2^89988720 is an apocalyptic number.

89988720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89988720 is an abundant number, since it is smaller than the sum of its proper divisors (188977056).

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

89988720 is a wasteful number, since it uses less digits than its factorization.

89988720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374969 (or 374963 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 89988720 is about 9486.2384536759. The cubic root of 89988720 is about 448.1217515603.

The spelling of 89988720 in words is "eighty-nine million, nine hundred eighty-eight thousand, seven hundred twenty".