10001256 has 16 divisors (see below), whose sum is σ = 25003200. Its totient is φ = 3333744.

The previous prime is 10001237. The next prime is 10001261. The reversal of 10001256 is 65210001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208336 + ... + 208383.

It is an arithmetic number, because the mean of its divisors is an integer number (1562700).

Almost surely, 2^10001256 is an apocalyptic number.

It is an amenable number.

10001256 is an abundant number, since it is smaller than the sum of its proper divisors (15001944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10001256 is a wasteful number, since it uses less digits than its factorization.

10001256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416728 (or 416724 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 10001256 is about 3162.4762449701. The cubic root of 10001256 is about 215.4524885255.

Adding to 10001256 its reverse (65210001), we get a palindrome (75211257).

The spelling of 10001256 in words is "ten million, one thousand, two hundred fifty-six".