223681328 has 20 divisors (see below), whose sum is σ = 466720128. Its totient is φ = 103237440.

The previous prime is 223681277. The next prime is 223681343. The reversal of 223681328 is 823186322.

It is an unprimeable number.

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, 537488 + ... + 537903.

Almost surely, 2^223681328 is an apocalyptic number.

It is an amenable number.

223681328 is an abundant number, since it is smaller than the sum of its proper divisors (243038800).

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

223681328 is a wasteful number, since it uses less digits than its factorization.

223681328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075412 (or 1075406 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 223681328 is about 14955.9796736957. The cubic root of 223681328 is about 607.0296589199.

The spelling of 223681328 in words is "two hundred twenty-three million, six hundred eighty-one thousand, three hundred twenty-eight".