235290 has 64 divisors (see below), whose sum is σ = 663552. Its totient is φ = 52800.

The previous prime is 235289. The next prime is 235307. The reversal of 235290 is 92532.

It is a super-2 number, since 2×235290² = 110722768200, which contains 22 as substring.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7575 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (10368).

2²³⁵²⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 235290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331776).

235290 is an abundant number, since it is smaller than the sum of its proper divisors (428262).

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

235290 is a wasteful number, since it uses less digits than its factorization.

235290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 235290 is about 485.0670056807. The cubic root of 235290 is about 61.7354317723.

It can be divided in two parts, 2352 and 90, that added together give a palindrome (2442).

The spelling of 235290 in words is "two hundred thirty-five thousand, two hundred ninety".