257434206 has 16 divisors (see below), whose sum is σ = 526842624. Its totient is φ = 83815704.

The previous prime is 257434159. The next prime is 257434223. The reversal of 257434206 is 602434752.

257434206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498646 + ... + 499161.

It is an arithmetic number, because the mean of its divisors is an integer number (32927664).

Almost surely, 2^257434206 is an apocalyptic number.

257434206 is an abundant number, since it is smaller than the sum of its proper divisors (269408418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257434206 is a wasteful number, since it uses less digits than its factorization.

257434206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997855.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 257434206 is about 16044.7563396893. The cubic root of 257434206 is about 636.1439737741.

Adding to 257434206 its reverse (602434752), we get a palindrome (859868958).

The spelling of 257434206 in words is "two hundred fifty-seven million, four hundred thirty-four thousand, two hundred six".