223725728 has 24 divisors (see below), whose sum is σ = 446498388. Its totient is φ = 110329344.

The previous prime is 223725701. The next prime is 223725731. The reversal of 223725728 is 827527322.

It can be written as a sum of positive squares in 2 ways, for example, as 223442704 + 283024 = 14948^2 + 532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 223725691 and 223725700.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45551 + ... + 50222.

Almost surely, 2^223725728 is an apocalyptic number.

It is an amenable number.

223725728 is a deficient number, since it is larger than the sum of its proper divisors (222772660).

223725728 is an equidigital number, since it uses as much as digits as its factorization.

223725728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95856 (or 95848 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 223725728 is about 14957.4639561658. The cubic root of 223725728 is about 607.0698207191.

The spelling of 223725728 in words is "two hundred twenty-three million, seven hundred twenty-five thousand, seven hundred twenty-eight".