90612312 has 64 divisors (see below), whose sum is σ = 274129920. Its totient is φ = 24365568.

The previous prime is 90612299. The next prime is 90612359. The reversal of 90612312 is 21321609.

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

It is a congruent number.

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, 13008 + ... + 18719.

It is an arithmetic number, because the mean of its divisors is an integer number (4283280).

Almost surely, 2^90612312 is an apocalyptic number.

It is an amenable number.

90612312 is an abundant number, since it is smaller than the sum of its proper divisors (183517608).

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

90612312 is a wasteful number, since it uses less digits than its factorization.

90612312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31760 (or 31756 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 90612312 is about 9519.0499525951. The cubic root of 90612312 is about 449.1544814606.

The spelling of 90612312 in words is "ninety million, six hundred twelve thousand, three hundred twelve".