234390 has 32 divisors (see below), whose sum is σ = 606816. Its totient is φ = 57600.

The previous prime is 234383. The next prime is 234431. The reversal of 234390 is 93432.

234390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

234390 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 15 ways as a sum of consecutive naturals, for example, 90 + ... + 690.

It is an arithmetic number, because the mean of its divisors is an integer number (18963).

2²³⁴³⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 234390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303408).

234390 is an abundant number, since it is smaller than the sum of its proper divisors (372426).

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

234390 is a wasteful number, since it uses less digits than its factorization.

234390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

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

The square root of 234390 is about 484.1384099614. The cubic root of 234390 is about 61.6566171433.

The spelling of 234390 in words is "two hundred thirty-four thousand, three hundred ninety".