257341404 has 24 divisors (see below), whose sum is σ = 600727680. Its totient is φ = 85742704.

The previous prime is 257341397. The next prime is 257341429. The reversal of 257341404 is 404143752.

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 7 ways as a sum of consecutive naturals, for example, 42817 + ... + 48455.

It is an arithmetic number, because the mean of its divisors is an integer number (25030320).

Almost surely, 2^257341404 is an apocalyptic number.

It is an amenable number.

257341404 is an abundant number, since it is smaller than the sum of its proper divisors (343386276).

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

257341404 is a wasteful number, since it uses less digits than its factorization.

257341404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449 (or 9447 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 257341404 is about 16041.8641061443. The cubic root of 257341404 is about 636.0675237829.

The spelling of 257341404 in words is "two hundred fifty-seven million, three hundred forty-one thousand, four hundred four".