90870528 has 72 divisors (see below), whose sum is σ = 276414208. Its totient is φ = 25961472.

The previous prime is 90870509. The next prime is 90870529. The reversal of 90870528 is 82507809.

It is not an unprimeable number, because it can be changed into a prime (90870529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3076 + ... + 13827.

Almost surely, 2^90870528 is an apocalyptic number.

It is an amenable number.

90870528 is an abundant number, since it is smaller than the sum of its proper divisors (185543680).

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

90870528 is a wasteful number, since it uses less digits than its factorization.

90870528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16929 (or 16915 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 90870528 is about 9532.6034219409. The cubic root of 90870528 is about 449.5807255238.

The spelling of 90870528 in words is "ninety million, eight hundred seventy thousand, five hundred twenty-eight".