257227328 has 14 divisors (see below), whose sum is σ = 510435606. Its totient is φ = 128613632.

The previous prime is 257227291. The next prime is 257227349. The reversal of 257227328 is 823722752.

257227328 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 184090624 + 73136704 = 13568^2 + 8552^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257227291 and 257227300.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2009525 + ... + 2009652.

Almost surely, 2^257227328 is an apocalyptic number.

It is an amenable number.

257227328 is a deficient number, since it is larger than the sum of its proper divisors (253208278).

257227328 is an equidigital number, since it uses as much as digits as its factorization.

257227328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019189 (or 4019179 counting only the distinct ones).

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

The square root of 257227328 is about 16038.3081401998. The cubic root of 257227328 is about 635.9735231518.

The spelling of 257227328 in words is "two hundred fifty-seven million, two hundred twenty-seven thousand, three hundred twenty-eight".