90234 has 20 divisors (see below), whose sum is σ = 202554. Its totient is φ = 30024.

The previous prime is 90227. The next prime is 90239. The reversal of 90234 is 43209.

It can be written as a sum of positive squares in only one way, i.e., 88209 + 2025 = 297^2 + 45^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (90239) by changing a digit.

90234 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 117 + ... + 440.

2⁹⁰²³⁴ is an apocalyptic number.

90234 is an abundant number, since it is smaller than the sum of its proper divisors (112320).

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

90234 is a wasteful number, since it uses less digits than its factorization.

90234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 90234 is about 300.3897468290. The cubic root of 90234 is about 44.8528526949.

It can be divided in two parts, 90 and 234, that added together give a square (324 = 18²).

The spelling of 90234 in words is "ninety thousand, two hundred thirty-four".