1001286 has 48 divisors (see below), whose sum is σ = 2555280. Its totient is φ = 279360.

The previous prime is 1001279. The next prime is 1001291. The reversal of 1001286 is 6821001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2380 + ... + 2768.

It is an arithmetic number, because the mean of its divisors is an integer number (53235).

2^1001286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277640).

1001286 is an abundant number, since it is smaller than the sum of its proper divisors (1553994).

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

1001286 is a wasteful number, since it uses less digits than its factorization.

1001286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1001286 is about 1000.6427934083. The cubic root of 1001286 is about 100.0428483043.

Adding to 1001286 its reverse (6821001), we get a palindrome (7822287).

The spelling of 1001286 in words is "one million, one thousand, two hundred eighty-six".