90858528 has 36 divisors (see below), whose sum is σ = 258379758. Its totient is φ = 30286080.

The previous prime is 90858511. The next prime is 90858529. The reversal of 90858528 is 82585809.

It can be written as a sum of positive squares in only one way, i.e., 85155984 + 5702544 = 9228^2 + 2388^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×90858528² = 16510544220653568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90858529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157453 + ... + 158028.

Almost surely, 2^90858528 is an apocalyptic number.

It is an amenable number.

90858528 is an abundant number, since it is smaller than the sum of its proper divisors (167521230).

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

90858528 is a wasteful number, since it uses less digits than its factorization.

90858528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315497 (or 315486 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 90858528 is about 9531.9739823396. The cubic root of 90858528 is about 449.5609347060.

The spelling of 90858528 in words is "ninety million, eight hundred fifty-eight thousand, five hundred twenty-eight".