90856323528 has 64 divisors (see below), whose sum is σ = 237218889600. Its totient is φ = 28943946240.

The previous prime is 90856323527. The next prime is 90856323539. The reversal of 90856323528 is 82532365809.

It is not an unprimeable number, because it can be changed into a prime (90856323521) 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, 582228 + ... + 721596.

It is an arithmetic number, because the mean of its divisors is an integer number (3706545150).

Almost surely, 2^90856323528 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 90856323528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118609444800).

90856323528 is an abundant number, since it is smaller than the sum of its proper divisors (146362566072).

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

90856323528 is a wasteful number, since it uses less digits than its factorization.

90856323528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140582 (or 140578 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 90856323528 in words is "ninety billion, eight hundred fifty-six million, three hundred twenty-three thousand, five hundred twenty-eight".