1286946 has 48 divisors (see below), whose sum is σ = 3032640. Its totient is φ = 393120.

The previous prime is 1286941. The next prime is 1286953. The reversal of 1286946 is 6496821.

It is a self number, because there is not a number n which added to its sum of digits gives 1286946.

It is not an unprimeable number, because it can be changed into a prime (1286941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18091 + ... + 18161.

It is an arithmetic number, because the mean of its divisors is an integer number (63180).

2^1286946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1286946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516320).

1286946 is an abundant number, since it is smaller than the sum of its proper divisors (1745694).

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

1286946 is a wasteful number, since it uses less digits than its factorization.

1286946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 148 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1286946 is about 1134.4364239568. The cubic root of 1286946 is about 108.7727498977.

The spelling of 1286946 in words is "one million, two hundred eighty-six thousand, nine hundred forty-six".