223105728 has 28 divisors (see below), whose sum is σ = 590301080. Its totient is φ = 74368512.

The previous prime is 223105721. The next prime is 223105741. The reversal of 223105728 is 827501322.

It is a super-3 number, since 3×223105728³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223105695 and 223105704.

It is not an unprimeable number, because it can be changed into a prime (223105721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580813 + ... + 581196.

Almost surely, 2^223105728 is an apocalyptic number.

It is an amenable number.

223105728 is an abundant number, since it is smaller than the sum of its proper divisors (367195352).

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

223105728 is a wasteful number, since it uses less digits than its factorization.

223105728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162024 (or 1162014 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 223105728 is about 14936.7241388465. The cubic root of 223105728 is about 606.5085210829.

The spelling of 223105728 in words is "two hundred twenty-three million, one hundred five thousand, seven hundred twenty-eight".