223256220 has 48 divisors (see below), whose sum is σ = 681948288. Its totient is φ = 54122560.

The previous prime is 223256219. The next prime is 223256237. The reversal of 223256220 is 22652322.

It is a super-3 number, since 3×223256220³ (a number of 26 digits) contains 333 as substring.

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, 168474 + ... + 169793.

It is an arithmetic number, because the mean of its divisors is an integer number (14207256).

Almost surely, 2^223256220 is an apocalyptic number.

223256220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223256220 is an abundant number, since it is smaller than the sum of its proper divisors (458692068).

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

223256220 is a wasteful number, since it uses less digits than its factorization.

223256220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338290 (or 338288 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 223256220 is about 14941.7609403979. The cubic root of 223256220 is about 606.6448602770.

The spelling of 223256220 in words is "two hundred twenty-three million, two hundred fifty-six thousand, two hundred twenty".