233490 has 32 divisors (see below), whose sum is σ = 576576. Its totient is φ = 60480.

The previous prime is 233489. The next prime is 233509. The reversal of 233490 is 94332.

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, 1200 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (18018).

2²³³⁴⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 233490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288288).

233490 is an abundant number, since it is smaller than the sum of its proper divisors (343086).

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

233490 is a wasteful number, since it uses less digits than its factorization.

233490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 233490 is about 483.2080297346. The cubic root of 233490 is about 61.5776005027.

The spelling of 233490 in words is "two hundred thirty-three thousand, four hundred ninety".