223218872 has 32 divisors (see below), whose sum is σ = 425174400. Its totient is φ = 109849824.

The previous prime is 223218871. The next prime is 223218899. The reversal of 223218872 is 278812322.

It is a happy number.

It is a super-3 number, since 3×223218872³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223218871) 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 7 ways as a sum of consecutive naturals, for example, 251213 + ... + 252099.

It is an arithmetic number, because the mean of its divisors is an integer number (13286700).

Almost surely, 2^223218872 is an apocalyptic number.

It is an amenable number.

223218872 is a deficient number, since it is larger than the sum of its proper divisors (201955528).

223218872 is a wasteful number, since it uses less digits than its factorization.

223218872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1351 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 223218872 is about 14940.5111023686. The cubic root of 223218872 is about 606.6110303337.

The spelling of 223218872 in words is "two hundred twenty-three million, two hundred eighteen thousand, eight hundred seventy-two".