257703470 has 8 divisors (see below), whose sum is σ = 463866264. Its totient is φ = 103081384.

The previous prime is 257703461. The next prime is 257703473. The reversal of 257703470 is 74307752.

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

It is a super-2 number, since 2×257703470² = 132822156900081800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257703470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257703473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12885164 + ... + 12885183.

It is an arithmetic number, because the mean of its divisors is an integer number (57983283).

Almost surely, 2^257703470 is an apocalyptic number.

257703470 is a deficient number, since it is larger than the sum of its proper divisors (206162794).

257703470 is a wasteful number, since it uses less digits than its factorization.

257703470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25770354.

The product of its (nonzero) digits is 41160, while the sum is 35.

The square root of 257703470 is about 16053.1451747002. The cubic root of 257703470 is about 636.3656886576.

The spelling of 257703470 in words is "two hundred fifty-seven million, seven hundred three thousand, four hundred seventy".