223128868 has 12 divisors (see below), whose sum is σ = 390662272. Its totient is φ = 111511080.

The previous prime is 223128863. The next prime is 223128883. The reversal of 223128868 is 868821322.

It is a super-3 number, since 3×223128868³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 223128868.

It is not an unprimeable number, because it can be changed into a prime (223128863) 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 3 ways as a sum of consecutive naturals, for example, 3048 + ... + 21343.

Almost surely, 2^223128868 is an apocalyptic number.

It is an amenable number.

223128868 is a deficient number, since it is larger than the sum of its proper divisors (167533404).

223128868 is a wasteful number, since it uses less digits than its factorization.

223128868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26682 (or 26680 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 223128868 is about 14937.4987196652. The cubic root of 223128868 is about 606.5294889025.

The spelling of 223128868 in words is "two hundred twenty-three million, one hundred twenty-eight thousand, eight hundred sixty-eight".