257138614 has 24 divisors (see below), whose sum is σ = 400735080. Its totient is φ = 123742080.

The previous prime is 257138603. The next prime is 257138657. The reversal of 257138614 is 416831752.

It is a super-2 number, since 2×257138614² = 132240533619681992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 678277 + ... + 678655.

It is an arithmetic number, because the mean of its divisors is an integer number (16697295).

Almost surely, 2^257138614 is an apocalyptic number.

257138614 is a deficient number, since it is larger than the sum of its proper divisors (143596466).

257138614 is a wasteful number, since it uses less digits than its factorization.

257138614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 765 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 257138614 is about 16035.5422109762. The cubic root of 257138614 is about 635.9004020428.

It can be divided in two parts, 257138 and 614, that added together give a palindrome (257752).

The spelling of 257138614 in words is "two hundred fifty-seven million, one hundred thirty-eight thousand, six hundred fourteen".