89605572 has 96 divisors (see below), whose sum is σ = 255467520. Its totient is φ = 23861760.

The previous prime is 89605567. The next prime is 89605573. The reversal of 89605572 is 27550698.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (89605573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186829 + ... + 187307.

It is an arithmetic number, because the mean of its divisors is an integer number (2661120).

Almost surely, 2^89605572 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 89605572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127733760).

89605572 is an abundant number, since it is smaller than the sum of its proper divisors (165861948).

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

89605572 is a wasteful number, since it uses less digits than its factorization.

89605572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 89605572 is about 9466.0219733529. The cubic root of 89605572 is about 447.4848524361.

The spelling of 89605572 in words is "eighty-nine million, six hundred five thousand, five hundred seventy-two".