256948 has 6 divisors (see below), whose sum is σ = 449666. Its totient is φ = 128472.

The previous prime is 256939. The next prime is 256957. The reversal of 256948 is 849652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (256939) and next prime (256957).

It can be written as a sum of positive squares in only one way, i.e., 242064 + 14884 = 492^2 + 122^2 .

It is a congruent number.

It is an unprimeable number.

256948 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32115 + ... + 32122.

2²⁵⁶⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

256948 is a deficient number, since it is larger than the sum of its proper divisors (192718).

256948 is a wasteful number, since it uses less digits than its factorization.

256948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64241 (or 64239 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 256948 is about 506.9003846911. The cubic root of 256948 is about 63.5743234565.

Subtracting 256948 from its reverse (849652), we obtain a cube (592704 = 84³).

The spelling of 256948 in words is "two hundred fifty-six thousand, nine hundred forty-eight".