89538520 has 64 divisors (see below), whose sum is σ = 209304000. Its totient is φ = 34444800.

The previous prime is 89538487. The next prime is 89538523. The reversal of 89538520 is 2583598.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89538523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149181 + ... + 149779.

It is an arithmetic number, because the mean of its divisors is an integer number (3270375).

Almost surely, 2^89538520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89538520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104652000).

89538520 is an abundant number, since it is smaller than the sum of its proper divisors (119765480).

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

89538520 is a wasteful number, since it uses less digits than its factorization.

89538520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 89538520 is about 9462.4795904668. The cubic root of 89538520 is about 447.3732066944.

The spelling of 89538520 in words is "eighty-nine million, five hundred thirty-eight thousand, five hundred twenty".