257896 has 8 divisors (see below), whose sum is σ = 483570. Its totient is φ = 128944.

The previous prime is 257893. The next prime is 257903. The reversal of 257896 is 698752.

257896 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 148996 + 108900 = 386^2 + 330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16111 + ... + 16126.

257896 is a Friedman number, since it can be written as 8^6-72*59, using all its digits and the basic arithmetic operations.

2²⁵⁷⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

257896 is a deficient number, since it is larger than the sum of its proper divisors (225674).

257896 is a wasteful number, since it uses less digits than its factorization.

257896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32243 (or 32239 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 257896 is about 507.8346187491. The cubic root of 257896 is about 63.6524125261.

It can be divided in two parts, 25 and 7896, that added together give a square (7921 = 89²).

The spelling of 257896 in words is "two hundred fifty-seven thousand, eight hundred ninety-six".