257873450 has 24 divisors (see below), whose sum is σ = 480070092. Its totient is φ = 103057920.

The previous prime is 257873437. The next prime is 257873479. The reversal of 257873450 is 54378752.

It can be written as a sum of positive squares in 6 ways, for example, as 132411049 + 125462401 = 11507^2 + 11201^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 257873398 and 257873407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99572 + ... + 102128.

Almost surely, 2^257873450 is an apocalyptic number.

257873450 is a deficient number, since it is larger than the sum of its proper divisors (222196642).

257873450 is a wasteful number, since it uses less digits than its factorization.

257873450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586 (or 4581 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 257873450 is about 16058.4385915941. The cubic root of 257873450 is about 636.5055725142.

The spelling of 257873450 in words is "two hundred fifty-seven million, eight hundred seventy-three thousand, four hundred fifty".