90233163 has 16 divisors (see below), whose sum is σ = 139491840. Its totient is φ = 57539592.

The previous prime is 90233153. The next prime is 90233173. The reversal of 90233163 is 36133209.

It is an interprime number because it is at equal distance from previous prime (90233153) and next prime (90233173).

It is not a de Polignac number, because 90233163 - 2⁵ = 90233131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (90233113) by changing a digit.

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, 72031 + ... + 73272.

It is an arithmetic number, because the mean of its divisors is an integer number (8718240).

Almost surely, 2^90233163 is an apocalyptic number.

90233163 is a deficient number, since it is larger than the sum of its proper divisors (49258677).

90233163 is a wasteful number, since it uses less digits than its factorization.

90233163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145335 (or 145329 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 90233163 is about 9499.1138007711. The cubic root of 90233163 is about 448.5271401122.

The spelling of 90233163 in words is "ninety million, two hundred thirty-three thousand, one hundred sixty-three".