90902112 has 48 divisors (see below), whose sum is σ = 272708352. Its totient is φ = 25971840.

The previous prime is 90902087. The next prime is 90902113. The reversal of 90902112 is 21120909.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90902113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66964 + ... + 68307.

It is an arithmetic number, because the mean of its divisors is an integer number (5681424).

Almost surely, 2^90902112 is an apocalyptic number.

It is an amenable number.

90902112 is an abundant number, since it is smaller than the sum of its proper divisors (181806240).

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

90902112 is a wasteful number, since it uses less digits than its factorization.

90902112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135291 (or 135283 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 90902112 is about 9534.2599083516. The cubic root of 90902112 is about 449.6328066300.

The spelling of 90902112 in words is "ninety million, nine hundred two thousand, one hundred twelve".