1286722 has 8 divisors (see below), whose sum is σ = 1942416. Its totient is φ = 639252.

The previous prime is 1286711. The next prime is 1286773. The reversal of 1286722 is 2276821.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (242802).

2^1286722 is an apocalyptic number.

1286722 is a deficient number, since it is larger than the sum of its proper divisors (655694).

1286722 is a wasteful number, since it uses less digits than its factorization.

1286722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112.

The product of its digits is 2688, while the sum is 28.

The square root of 1286722 is about 1134.3376922240. The cubic root of 1286722 is about 108.7664387005.

Subtracting 1286722 from its reverse (2276821), we obtain a palindrome (990099).

The spelling of 1286722 in words is "one million, two hundred eighty-six thousand, seven hundred twenty-two".