1286064 has 80 divisors (see below), whose sum is σ = 3992800. Its totient is φ = 393984.

The previous prime is 1286039. The next prime is 1286071. The reversal of 1286064 is 4606821.

It is a super-2 number, since 2×1286064² = 3307921224192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5502 + ... + 5730.

It is an arithmetic number, because the mean of its divisors is an integer number (49910).

2^1286064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1286064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1996400).

1286064 is an abundant number, since it is smaller than the sum of its proper divisors (2706736).

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

1286064 is a wasteful number, since it uses less digits than its factorization.

1286064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1286064 is about 1134.0476180478. The cubic root of 1286064 is about 108.7478953219.

The spelling of 1286064 in words is "one million, two hundred eighty-six thousand, sixty-four".