90331860 has 48 divisors (see below), whose sum is σ = 253382976. Its totient is φ = 24045312.

The previous prime is 90331853. The next prime is 90331873. The reversal of 90331860 is 6813309.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46264 + ... + 48176.

It is an arithmetic number, because the mean of its divisors is an integer number (5278812).

Almost surely, 2^90331860 is an apocalyptic number.

It is an amenable number.

90331860 is an abundant number, since it is smaller than the sum of its proper divisors (163051116).

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

90331860 is a wasteful number, since it uses less digits than its factorization.

90331860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712 (or 2710 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 90331860 is about 9504.3074445222. The cubic root of 90331860 is about 448.6906134638.

The spelling of 90331860 in words is "ninety million, three hundred thirty-one thousand, eight hundred sixty".