90015884 has 48 divisors (see below), whose sum is σ = 197225280. Its totient is φ = 35051520.

The previous prime is 90015881. The next prime is 90015929. The reversal of 90015884 is 48851009.

It is not an unprimeable number, because it can be changed into a prime (90015881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10544 + ... + 17064.

It is an arithmetic number, because the mean of its divisors is an integer number (4108860).

Almost surely, 2^90015884 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 90015884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98612640).

90015884 is an abundant number, since it is smaller than the sum of its proper divisors (107209396).

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

90015884 is a wasteful number, since it uses less digits than its factorization.

90015884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6578 (or 6576 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 90015884 is about 9487.6701038769. The cubic root of 90015884 is about 448.1668370430.

The spelling of 90015884 in words is "ninety million, fifteen thousand, eight hundred eighty-four".