1256704 has 18 divisors (see below), whose sum is σ = 2509010. Its totient is φ = 628224.

The previous prime is 1256693. The next prime is 1256707. The reversal of 1256704 is 4076521.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 2304 = 1120^2 + 48^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199 + ... + 2710.

2^1256704 is an apocalyptic number.

It is an amenable number.

1256704 is a deficient number, since it is larger than the sum of its proper divisors (1252306).

1256704 is an frugal number, since it uses more digits than its factorization.

1256704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4925 (or 4911 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1256704 is about 1121.0280995586. The cubic root of 1256704 is about 107.9139689816.

The spelling of 1256704 in words is "one million, two hundred fifty-six thousand, seven hundred four".