257423334 has 32 divisors (see below), whose sum is σ = 590205696. Its totient is φ = 73323360.

The previous prime is 257423329. The next prime is 257423347. The reversal of 257423334 is 433324752.

It is a junction number, because it is equal to n+sod(n) for n = 257423295 and 257423304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4644 + ... + 23160.

It is an arithmetic number, because the mean of its divisors is an integer number (18443928).

Almost surely, 2^257423334 is an apocalyptic number.

257423334 is an abundant number, since it is smaller than the sum of its proper divisors (332782362).

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

257423334 is a wasteful number, since it uses less digits than its factorization.

257423334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18860.

The product of its digits is 60480, while the sum is 33.

The square root of 257423334 is about 16044.4175338340. The cubic root of 257423334 is about 636.1350184054.

The spelling of 257423334 in words is "two hundred fifty-seven million, four hundred twenty-three thousand, three hundred thirty-four".