1286868 has 24 divisors (see below), whose sum is σ = 3276000. Its totient is φ = 389920.

The previous prime is 1286843. The next prime is 1286881. The reversal of 1286868 is 8686821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4743 + ... + 5006.

It is an arithmetic number, because the mean of its divisors is an integer number (136500).

2^1286868 is an apocalyptic number.

It is an amenable number.

1286868 is an abundant number, since it is smaller than the sum of its proper divisors (1989132).

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

1286868 is a wasteful number, since it uses less digits than its factorization.

1286868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9767 (or 9765 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 1286868 is about 1134.4020451321. The cubic root of 1286868 is about 108.7705523318.

It can be divided in two parts, 128 and 6868, that added together give a palindrome (6996).

The spelling of 1286868 in words is "one million, two hundred eighty-six thousand, eight hundred sixty-eight".