90528570 has 192 divisors, whose sum is σ = 282683520. Its totient is φ = 20528640.

The previous prime is 90528569. The next prime is 90528583. The reversal of 90528570 is 7582509.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 555309 + ... + 555471.

It is an arithmetic number, because the mean of its divisors is an integer number (1472310).

Almost surely, 2^90528570 is an apocalyptic number.

90528570 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90528570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141341760).

90528570 is an abundant number, since it is smaller than the sum of its proper divisors (192154950).

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

90528570 is a wasteful number, since it uses less digits than its factorization.

90528570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 90528570 is about 9514.6502825905. The cubic root of 90528570 is about 449.0160724269.

The spelling of 90528570 in words is "ninety million, five hundred twenty-eight thousand, five hundred seventy".