223828728 has 32 divisors (see below), whose sum is σ = 578869200. Its totient is φ = 72036608.

The previous prime is 223828727. The next prime is 223828741. The reversal of 223828728 is 827828322.

223828728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 223828728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223828727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160101 + ... + 161492.

Almost surely, 2^223828728 is an apocalyptic number.

It is an amenable number.

223828728 is an abundant number, since it is smaller than the sum of its proper divisors (355040472).

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

223828728 is a wasteful number, since it uses less digits than its factorization.

223828728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321631 (or 321627 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 223828728 is about 14960.9066570178. The cubic root of 223828728 is about 607.1629684002.

The spelling of 223828728 in words is "two hundred twenty-three million, eight hundred twenty-eight thousand, seven hundred twenty-eight".