257428334 has 8 divisors (see below), whose sum is σ = 387758880. Its totient is φ = 128175376.

The previous prime is 257428319. The next prime is 257428337. The reversal of 257428334 is 433824752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257428337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268799 + ... + 269754.

It is an arithmetic number, because the mean of its divisors is an integer number (48469860).

Almost surely, 2^257428334 is an apocalyptic number.

257428334 is a deficient number, since it is larger than the sum of its proper divisors (130330546).

257428334 is a wasteful number, since it uses less digits than its factorization.

257428334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538794.

The product of its digits is 161280, while the sum is 38.

The square root of 257428334 is about 16044.5733505133. The cubic root of 257428334 is about 636.1391369838.

The spelling of 257428334 in words is "two hundred fifty-seven million, four hundred twenty-eight thousand, three hundred thirty-four".