257894 has 24 divisors (see below), whose sum is σ = 483120. Its totient is φ = 101088.

The previous prime is 257893. The next prime is 257903. The reversal of 257894 is 498752.

It is a happy number.

Its product of digits (20160) is a multiple of the sum of its prime factors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2312 + ... + 2420.

It is an arithmetic number, because the mean of its divisors is an integer number (20130).

2²⁵⁷⁸⁹⁴ is an apocalyptic number.

257894 is a deficient number, since it is larger than the sum of its proper divisors (225226).

257894 is a wasteful number, since it uses less digits than its factorization.

257894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 131 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 257894 is about 507.8326496002. The cubic root of 257894 is about 63.6522479828.

The spelling of 257894 in words is "two hundred fifty-seven thousand, eight hundred ninety-four".