1286822 has 8 divisors (see below), whose sum is σ = 1943472. Its totient is φ = 639000.

The previous prime is 1286821. The next prime is 1286833. The reversal of 1286822 is 2286821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1829 + ... + 2432.

It is an arithmetic number, because the mean of its divisors is an integer number (242934).

2^1286822 is an apocalyptic number.

1286822 is a deficient number, since it is larger than the sum of its proper divisors (656650).

1286822 is a wasteful number, since it uses less digits than its factorization.

1286822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414.

The product of its digits is 3072, while the sum is 29.

The square root of 1286822 is about 1134.3817699523. The cubic root of 1286822 is about 108.7692562898.

Subtracting 1286822 from its reverse (2286821), we obtain a palindrome (999999).

The spelling of 1286822 in words is "one million, two hundred eighty-six thousand, eight hundred twenty-two".