223523220 has 48 divisors (see below), whose sum is σ = 658808640. Its totient is φ = 56468736.

The previous prime is 223523197. The next prime is 223523221. The reversal of 223523220 is 22325322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223523221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96897 + ... + 99176.

It is an arithmetic number, because the mean of its divisors is an integer number (13725180).

Almost surely, 2^223523220 is an apocalyptic number.

223523220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223523220 is an abundant number, since it is smaller than the sum of its proper divisors (435285420).

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

223523220 is a wasteful number, since it uses less digits than its factorization.

223523220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196104 (or 196102 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 223523220 is about 14950.6929605286. The cubic root of 223523220 is about 606.8865999403.

Adding to 223523220 its reverse (22325322), we get a palindrome (245848542).

The spelling of 223523220 in words is "two hundred twenty-three million, five hundred twenty-three thousand, two hundred twenty".