90087312 has 80 divisors (see below), whose sum is σ = 267518592. Its totient is φ = 25589760.

The previous prime is 90087307. The next prime is 90087359. The reversal of 90087312 is 21378009.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90087312.

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, 65512 + ... + 66872.

Almost surely, 2^90087312 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 90087312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133759296).

90087312 is an abundant number, since it is smaller than the sum of its proper divisors (177431280).

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

90087312 is a wasteful number, since it uses less digits than its factorization.

90087312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 90087312 is about 9491.4336114204. The cubic root of 90087312 is about 448.2853464883.

The spelling of 90087312 in words is "ninety million, eighty-seven thousand, three hundred twelve".