227728 has 20 divisors (see below), whose sum is σ = 452848. Its totient is φ = 110880.

The previous prime is 227719. The next prime is 227729. The reversal of 227728 is 827722.

227728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 227696 and 227705.

It is not an unprimeable number, because it can be changed into a prime (227729) by changing a digit.

227728 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523 + ... + 853.

2²²⁷⁷²⁸ is an apocalyptic number.

It is an amenable number.

227728 is a deficient number, since it is larger than the sum of its proper divisors (225120).

227728 is a wasteful number, since it uses less digits than its factorization.

227728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 376 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 227728 is about 477.2085497977. The cubic root of 227728 is about 61.0668442202.

It can be divided in two parts, 22 and 7728, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 227728 in words is "two hundred twenty-seven thousand, seven hundred twenty-eight".