1026864 has 40 divisors (see below), whose sum is σ = 2948720. Its totient is φ = 342144.

The previous prime is 1026859. The next prime is 1026887. The reversal of 1026864 is 4686201.

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

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 7 ways as a sum of consecutive naturals, for example, 757 + ... + 1620.

It is an arithmetic number, because the mean of its divisors is an integer number (73718).

2^1026864 is an apocalyptic number.

It is an amenable number.

1026864 is an abundant number, since it is smaller than the sum of its proper divisors (1921856).

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

1026864 is a wasteful number, since it uses less digits than its factorization.

1026864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394 (or 2382 counting only the distinct ones).

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

The square root of 1026864 is about 1013.3429824102. The cubic root of 1026864 is about 100.8875656325.

The spelling of 1026864 in words is "one million, twenty-six thousand, eight hundred sixty-four".