232021220 has 24 divisors (see below), whose sum is σ = 492723000. Its totient is φ = 91764992.

The previous prime is 232021213. The next prime is 232021241. The reversal of 232021220 is 22120232.

It can be written as a sum of positive squares in 4 ways, for example, as 7396 + 232013824 = 86^2 + 15232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 232021195 and 232021204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63395 + ... + 66954.

It is an arithmetic number, because the mean of its divisors is an integer number (20530125).

Almost surely, 2^232021220 is an apocalyptic number.

232021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232021220 is an abundant number, since it is smaller than the sum of its proper divisors (260701780).

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

232021220 is a wasteful number, since it uses less digits than its factorization.

232021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130447 (or 130445 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 232021220 is about 15232.2427764266. The cubic root of 232021220 is about 614.4820986359.

Adding to 232021220 its reverse (22120232), we get a palindrome (254141452).

It can be divided in two parts, 2320212 and 20, that added together give a palindrome (2320232).

The spelling of 232021220 in words is "two hundred thirty-two million, twenty-one thousand, two hundred twenty".