235220 has 24 divisors (see below), whose sum is σ = 520800. Its totient is φ = 88992.

The previous prime is 235211. The next prime is 235231. The reversal of 235220 is 22532.

235220 is nontrivially palindromic in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 235195 and 235204.

It is a congruent number.

It is an unprimeable number.

235220 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 7 ways as a sum of consecutive naturals, for example, 71 + ... + 689.

It is an arithmetic number, because the mean of its divisors is an integer number (21700).

2²³⁵²²⁰ is an apocalyptic number.

235220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 235220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260400).

235220 is an abundant number, since it is smaller than the sum of its proper divisors (285580).

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

235220 is a wasteful number, since it uses less digits than its factorization.

235220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 235220 is about 484.9948453334. The cubic root of 235220 is about 61.7293089610.

Adding to 235220 its reverse (22532), we get a palindrome (257752).

The spelling of 235220 in words is "two hundred thirty-five thousand, two hundred twenty".