223328028 has 96 divisors (see below), whose sum is σ = 652861440. Its totient is φ = 57723840.

The previous prime is 223328011. The next prime is 223328051. The reversal of 223328028 is 820823322.

It is a junction number, because it is equal to n+sod(n) for n = 223327986 and 223328004.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 242553 + ... + 243471.

It is an arithmetic number, because the mean of its divisors is an integer number (6800640).

Almost surely, 2^223328028 is an apocalyptic number.

223328028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223328028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326430720).

223328028 is an abundant number, since it is smaller than the sum of its proper divisors (429533412).

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

223328028 is a wasteful number, since it uses less digits than its factorization.

223328028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 223328028 is about 14944.1636768338. The cubic root of 223328028 is about 606.7098936044.

The spelling of 223328028 in words is "two hundred twenty-three million, three hundred twenty-eight thousand, twenty-eight".