90087288 has 32 divisors (see below), whose sum is σ = 225450960. Its totient is φ = 29998080.

The previous prime is 90087269. The next prime is 90087307. The reversal of 90087288 is 88278009.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90087269) and next prime (90087307).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43656 + ... + 45672.

Almost surely, 2^90087288 is an apocalyptic number.

It is an amenable number.

90087288 is an abundant number, since it is smaller than the sum of its proper divisors (135363672).

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

90087288 is a wasteful number, since it uses less digits than its factorization.

90087288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3887 (or 3883 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 90087288 is about 9491.4323471223. The cubic root of 90087288 is about 448.2853066793.

It can be divided in two parts, 900 and 87288, that added together give a palindrome (88188).

The spelling of 90087288 in words is "ninety million, eighty-seven thousand, two hundred eighty-eight".