89309531220 has 384 divisors, whose sum is σ = 318637670400. Its totient is φ = 18181877760.

The previous prime is 89309531219. The next prime is 89309531281. The reversal of 89309531220 is 2213590398.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 85137256 + ... + 85138304.

It is an arithmetic number, because the mean of its divisors is an integer number (829785600).

Almost surely, 2^89309531220 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 89309531220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159318835200).

89309531220 is an abundant number, since it is smaller than the sum of its proper divisors (229328139180).

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

89309531220 is a wasteful number, since it uses less digits than its factorization.

89309531220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615 (or 1613 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 89309531220 in words is "eighty-nine billion, three hundred nine million, five hundred thirty-one thousand, two hundred twenty".