1003256 has 8 divisors (see below), whose sum is σ = 1881120. Its totient is φ = 501624.

The previous prime is 1003241. The next prime is 1003259. The reversal of 1003256 is 6523001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003259) 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 as a sum of consecutive naturals, namely, 62696 + ... + 62711.

It is an arithmetic number, because the mean of its divisors is an integer number (235140).

2^1003256 is an apocalyptic number.

It is an amenable number.

1003256 is a deficient number, since it is larger than the sum of its proper divisors (877864).

1003256 is a wasteful number, since it uses less digits than its factorization.

1003256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125413 (or 125409 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1003256 is about 1001.6266769610. The cubic root of 1003256 is about 100.1084157511.

Adding to 1003256 its reverse (6523001), we get a palindrome (7526257).

The spelling of 1003256 in words is "one million, three thousand, two hundred fifty-six".