90233864 has 16 divisors (see below), whose sum is σ = 193358400. Its totient is φ = 38671632.

The previous prime is 90233863. The next prime is 90233873. The reversal of 90233864 is 46833209.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (90233863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805604 + ... + 805715.

It is an arithmetic number, because the mean of its divisors is an integer number (12084900).

Almost surely, 2^90233864 is an apocalyptic number.

It is an amenable number.

90233864 is an abundant number, since it is smaller than the sum of its proper divisors (103124536).

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

90233864 is a wasteful number, since it uses less digits than its factorization.

90233864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611332 (or 1611328 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 90233864 is about 9499.1506988783. The cubic root of 90233864 is about 448.5283016094.

The spelling of 90233864 in words is "ninety million, two hundred thirty-three thousand, eight hundred sixty-four".