90215952 has 80 divisors (see below), whose sum is σ = 253317120. Its totient is φ = 27561600.

The previous prime is 90215903. The next prime is 90215977. The reversal of 90215952 is 25951209.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26677 + ... + 29867.

It is an arithmetic number, because the mean of its divisors is an integer number (3166464).

Almost surely, 2^90215952 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 90215952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126658560).

90215952 is an abundant number, since it is smaller than the sum of its proper divisors (163101168).

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

90215952 is a wasteful number, since it uses less digits than its factorization.

90215952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252 (or 3246 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 90215952 is about 9498.2078309542. The cubic root of 90215952 is about 448.4986210651.

The spelling of 90215952 in words is "ninety million, two hundred fifteen thousand, nine hundred fifty-two".