257423338 has 32 divisors (see below), whose sum is σ = 405155520. Its totient is φ = 122567040.

The previous prime is 257423329. The next prime is 257423347. The reversal of 257423338 is 833324752.

It is an interprime number because it is at equal distance from previous prime (257423329) and next prime (257423347).

It is a junction number, because it is equal to n+sod(n) for n = 257423297 and 257423306.

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, 741681 + ... + 742027.

It is an arithmetic number, because the mean of its divisors is an integer number (12661110).

Almost surely, 2^257423338 is an apocalyptic number.

257423338 is a deficient number, since it is larger than the sum of its proper divisors (147732182).

257423338 is a wasteful number, since it uses less digits than its factorization.

257423338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582.

The product of its digits is 120960, while the sum is 37.

The square root of 257423338 is about 16044.4176584880. The cubic root of 257423338 is about 636.1350217003.

The spelling of 257423338 in words is "two hundred fifty-seven million, four hundred twenty-three thousand, three hundred thirty-eight".