223401220 has 24 divisors (see below), whose sum is σ = 536163264. Its totient is φ = 76594656.

The previous prime is 223401173. The next prime is 223401229. The reversal of 223401220 is 22104322.

It is a junction number, because it is equal to n+sod(n) for n = 223401194 and 223401203.

It is not an unprimeable number, because it can be changed into a prime (223401229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797722 + ... + 798001.

It is an arithmetic number, because the mean of its divisors is an integer number (22340136).

Almost surely, 2^223401220 is an apocalyptic number.

223401220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223401220 is an abundant number, since it is smaller than the sum of its proper divisors (312762044).

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

223401220 is a wasteful number, since it uses less digits than its factorization.

223401220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595739 (or 1595737 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 223401220 is about 14946.6123252060. The cubic root of 223401220 is about 606.7761660149.

Adding to 223401220 its reverse (22104322), we get a palindrome (245505542).

The spelling of 223401220 in words is "two hundred twenty-three million, four hundred one thousand, two hundred twenty".