2001268 has 6 divisors (see below), whose sum is σ = 3502226. Its totient is φ = 1000632.

The previous prime is 2001247. The next prime is 2001269. The reversal of 2001268 is 8621002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1205604 + 795664 = 1098^2 + 892^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001269) by changing a digit.

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 as a sum of consecutive naturals, namely, 250155 + ... + 250162.

2^2001268 is an apocalyptic number.

It is an amenable number.

2001268 is a deficient number, since it is larger than the sum of its proper divisors (1500958).

2001268 is a wasteful number, since it uses less digits than its factorization.

2001268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500321 (or 500319 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2001268 is about 1414.6617970384. The cubic root of 2001268 is about 126.0187256960.

The spelling of 2001268 in words is "two million, one thousand, two hundred sixty-eight".