233215220 has 24 divisors (see below), whose sum is σ = 559716864. Its totient is φ = 79959456.

The previous prime is 233215219. The next prime is 233215271. The reversal of 233215220 is 22512332.

233215220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 233215192 and 233215201.

It is a congruent number.

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, 832772 + ... + 833051.

It is an arithmetic number, because the mean of its divisors is an integer number (23321536).

Almost surely, 2^233215220 is an apocalyptic number.

233215220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233215220 is an abundant number, since it is smaller than the sum of its proper divisors (326501644).

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

233215220 is a wasteful number, since it uses less digits than its factorization.

233215220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665839 (or 1665837 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 233215220 is about 15271.3856607709. The cubic root of 233215220 is about 615.5343539225.

Adding to 233215220 its reverse (22512332), we get a palindrome (255727552).

The spelling of 233215220 in words is "two hundred thirty-three million, two hundred fifteen thousand, two hundred twenty".