89955520 has 56 divisors (see below), whose sum is σ = 216255600. Its totient is φ = 35638272.

The previous prime is 89955511. The next prime is 89955533. The reversal of 89955520 is 2555998.

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, 33591 + ... + 36169.

Almost surely, 2^89955520 is an apocalyptic number.

89955520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89955520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108127800).

89955520 is an abundant number, since it is smaller than the sum of its proper divisors (126300080).

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

89955520 is a wasteful number, since it uses less digits than its factorization.

89955520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705 (or 2695 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The square root of 89955520 is about 9484.4883889433. The cubic root of 89955520 is about 448.0666354963.

The spelling of 89955520 in words is "eighty-nine million, nine hundred fifty-five thousand, five hundred twenty".