90215600 has 60 divisors (see below), whose sum is σ = 229509864. Its totient is φ = 33960960.

The previous prime is 90215599. The next prime is 90215633. The reversal of 90215600 is 651209.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167 + ... + 13433.

Almost surely, 2^90215600 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 90215600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114754932).

90215600 is an abundant number, since it is smaller than the sum of its proper divisors (139294264).

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

90215600 is a wasteful number, since it uses less digits than its factorization.

90215600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13302 (or 13291 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 90215600 is about 9498.1893011247. The cubic root of 90215600 is about 448.4980377547.

Adding to 90215600 its reverse (651209), we get a palindrome (90866809).

The spelling of 90215600 in words is "ninety million, two hundred fifteen thousand, six hundred".