1286634 has 8 divisors (see below), whose sum is σ = 2573280. Its totient is φ = 428876.

The previous prime is 1286633. The next prime is 1286641. The reversal of 1286634 is 4366821.

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

1286634 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1286633) 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 in 3 ways as a sum of consecutive naturals, for example, 107214 + ... + 107225.

It is an arithmetic number, because the mean of its divisors is an integer number (321660).

2^1286634 is an apocalyptic number.

1286634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1286634 is a wasteful number, since it uses less digits than its factorization.

1286634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214444.

The product of its digits is 6912, while the sum is 30.

The square root of 1286634 is about 1134.2989024062. The cubic root of 1286634 is about 108.7639591013.

The spelling of 1286634 in words is "one million, two hundred eighty-six thousand, six hundred thirty-four".