257966228 has 24 divisors (see below), whose sum is σ = 514766952. Its totient is φ = 112057344.

The previous prime is 257966227. The next prime is 257966239. The reversal of 257966228 is 822669752.

It can be written as a sum of positive squares in 4 ways, for example, as 99760144 + 158206084 = 9988^2 + 12578^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257966227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145025 + ... + 146792.

It is an arithmetic number, because the mean of its divisors is an integer number (21448623).

Almost surely, 2^257966228 is an apocalyptic number.

It is an amenable number.

257966228 is a deficient number, since it is larger than the sum of its proper divisors (256800724).

257966228 is a wasteful number, since it uses less digits than its factorization.

257966228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291851 (or 291849 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 257966228 is about 16061.3270933631. The cubic root of 257966228 is about 636.5818975919.

The spelling of 257966228 in words is "two hundred fifty-seven million, nine hundred sixty-six thousand, two hundred twenty-eight".