1286000 has 40 divisors (see below), whose sum is σ = 3114384. Its totient is φ = 513600.

The previous prime is 1285993. The next prime is 1286011. The reversal of 1286000 is 6821.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1286000.

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, 1679 + ... + 2321.

2^1286000 is an apocalyptic number.

1286000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1286000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1557192).

1286000 is an abundant number, since it is smaller than the sum of its proper divisors (1828384).

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

1286000 is an equidigital number, since it uses as much as digits as its factorization.

1286000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1286000 is about 1134.0194001868. The cubic root of 1286000 is about 108.7460913732.

The spelling of 1286000 in words is "one million, two hundred eighty-six thousand".