257838034 has 4 divisors (see below), whose sum is σ = 386757054. Its totient is φ = 128919016.

The previous prime is 257838023. The next prime is 257838071. The reversal of 257838034 is 430838752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 238609809 + 19228225 = 15447^2 + 4385^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 64459507 + ... + 64459510.

Almost surely, 2^257838034 is an apocalyptic number.

257838034 is a deficient number, since it is larger than the sum of its proper divisors (128919020).

257838034 is a wasteful number, since it uses less digits than its factorization.

257838034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128919019.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 257838034 is about 16057.3358313264. The cubic root of 257838034 is about 636.4764322345.

The spelling of 257838034 in words is "two hundred fifty-seven million, eight hundred thirty-eight thousand, thirty-four".