257484628 has 18 divisors (see below), whose sum is σ = 463127546. Its totient is φ = 125167824.

The previous prime is 257484613. The next prime is 257484629. The reversal of 257484628 is 826484752.

It can be written as a sum of positive squares in only one way, i.e., 250525584 + 6959044 = 15828^2 + 2638^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257484629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194553 + ... + 195871.

Almost surely, 2^257484628 is an apocalyptic number.

It is an amenable number.

257484628 is a deficient number, since it is larger than the sum of its proper divisors (205642918).

257484628 is an equidigital number, since it uses as much as digits as its factorization.

257484628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679 (or 1358 counting only the distinct ones).

The product of its digits is 860160, while the sum is 46.

The square root of 257484628 is about 16046.3275549267. The cubic root of 257484628 is about 636.1855035537.

The spelling of 257484628 in words is "two hundred fifty-seven million, four hundred eighty-four thousand, six hundred twenty-eight".