257871470 has 32 divisors (see below), whose sum is σ = 493387200. Its totient is φ = 96702976.

The previous prime is 257871443. The next prime is 257871479. The reversal of 257871470 is 74178752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257871479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42911 + ... + 48549.

It is an arithmetic number, because the mean of its divisors is an integer number (15418350).

Almost surely, 2^257871470 is an apocalyptic number.

257871470 is a deficient number, since it is larger than the sum of its proper divisors (235515730).

257871470 is a wasteful number, since it uses less digits than its factorization.

257871470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932.

The product of its (nonzero) digits is 109760, while the sum is 41.

The square root of 257871470 is about 16058.3769416464. The cubic root of 257871470 is about 636.5039434409.

The spelling of 257871470 in words is "two hundred fifty-seven million, eight hundred seventy-one thousand, four hundred seventy".