90115600 has 30 divisors (see below), whose sum is σ = 216503690. Its totient is φ = 36046080.

The previous prime is 90115583. The next prime is 90115601. The reversal of 90115600 is 651109.

It can be written as a sum of positive squares in 3 ways, for example, as 13307904 + 76807696 = 3648^2 + 8764^2 .

It is not an unprimeable number, because it can be changed into a prime (90115601) 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, 112245 + ... + 113044.

Almost surely, 2^90115600 is an apocalyptic number.

It is an amenable number.

90115600 is an abundant number, since it is smaller than the sum of its proper divisors (126388090).

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

90115600 is a wasteful number, since it uses less digits than its factorization.

90115600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225307 (or 225296 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 90115600 is about 9492.9236803000. The cubic root of 90115600 is about 448.3322630796.

Adding to 90115600 its reverse (651109), we get a palindrome (90766709).

The spelling of 90115600 in words is "ninety million, one hundred fifteen thousand, six hundred".