223971220 has 48 divisors (see below), whose sum is σ = 514136448. Its totient is φ = 81279360.

The previous prime is 223971161. The next prime is 223971229. The reversal of 223971220 is 22179322.

223971220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223971229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180442 + ... + 181678.

It is an arithmetic number, because the mean of its divisors is an integer number (10711176).

Almost surely, 2^223971220 is an apocalyptic number.

223971220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223971220 is an abundant number, since it is smaller than the sum of its proper divisors (290165228).

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

223971220 is a wasteful number, since it uses less digits than its factorization.

223971220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080 (or 2078 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 223971220 is about 14965.6680438930. The cubic root of 223971220 is about 607.2917834306.

The spelling of 223971220 in words is "two hundred twenty-three million, nine hundred seventy-one thousand, two hundred twenty".