90885912 has 64 divisors (see below), whose sum is σ = 251338080. Its totient is φ = 27205632.

The previous prime is 90885881. The next prime is 90885917. The reversal of 90885912 is 21958809.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90885917) 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, 7608 + ... + 15480.

Almost surely, 2^90885912 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 90885912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125669040).

90885912 is an abundant number, since it is smaller than the sum of its proper divisors (160452168).

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

90885912 is a wasteful number, since it uses less digits than its factorization.

90885912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7932 (or 7928 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 90885912 is about 9533.4103027196. The cubic root of 90885912 is about 449.6060948039.

The spelling of 90885912 in words is "ninety million, eight hundred eighty-five thousand, nine hundred twelve".