233012220 has 48 divisors (see below), whose sum is σ = 745640448. Its totient is φ = 53259840.

The previous prime is 233012209. The next prime is 233012267. The reversal of 233012220 is 22210332.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 233012220.

It is a congruent number.

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, 276976 + ... + 277815.

It is an arithmetic number, because the mean of its divisors is an integer number (15534176).

Almost surely, 2^233012220 is an apocalyptic number.

233012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233012220 is an abundant number, since it is smaller than the sum of its proper divisors (512628228).

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

233012220 is a wasteful number, since it uses less digits than its factorization.

233012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554810 (or 554808 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 233012220 is about 15264.7377966344. The cubic root of 233012220 is about 615.3557067109.

Adding to 233012220 its reverse (22210332), we get a palindrome (255222552).

The spelling of 233012220 in words is "two hundred thirty-three million, twelve thousand, two hundred twenty".