90907288 has 16 divisors (see below), whose sum is σ = 171218880. Its totient is φ = 45248928.

The previous prime is 90907273. The next prime is 90907303. The reversal of 90907288 is 88270909.

It is an interprime number because it is at equal distance from previous prime (90907273) and next prime (90907303).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23695 + ... + 27262.

It is an arithmetic number, because the mean of its divisors is an integer number (10701180).

Almost surely, 2^90907288 is an apocalyptic number.

It is an amenable number.

90907288 is a deficient number, since it is larger than the sum of its proper divisors (80311592).

90907288 is a wasteful number, since it uses less digits than its factorization.

90907288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51186 (or 51182 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 90907288 is about 9534.5313466368. The cubic root of 90907288 is about 449.6413405543.

The spelling of 90907288 in words is "ninety million, nine hundred seven thousand, two hundred eighty-eight".