2255728 has 10 divisors (see below), whose sum is σ = 4370504. Its totient is φ = 1127856.

The previous prime is 2255723. The next prime is 2255731. The reversal of 2255728 is 8275522.

It is a self number, because there is not a number n which added to its sum of digits gives 2255728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70476 + ... + 70507.

2^2255728 is an apocalyptic number.

It is an amenable number.

2255728 is a deficient number, since it is larger than the sum of its proper divisors (2114776).

2255728 is a wasteful number, since it uses less digits than its factorization.

2255728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140991 (or 140985 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 2255728 is about 1501.9081196931. The cubic root of 2255728 is about 131.1481725694.

The spelling of 2255728 in words is "two million, two hundred fifty-five thousand, seven hundred twenty-eight".