1090864 has 20 divisors (see below), whose sum is σ = 2187360. Its totient is φ = 526400.

The previous prime is 1090849. The next prime is 1090877. The reversal of 1090864 is 4680901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712 + ... + 1639.

It is an arithmetic number, because the mean of its divisors is an integer number (109368).

2^1090864 is an apocalyptic number.

It is an amenable number.

1090864 is an abundant number, since it is smaller than the sum of its proper divisors (1096496).

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

1090864 is a wasteful number, since it uses less digits than its factorization.

1090864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388 (or 2382 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1090864 is about 1044.4443498818. Note that the first 3 decimals coincide. The cubic root of 1090864 is about 102.9414314968.

The spelling of 1090864 in words is "one million, ninety thousand, eight hundred sixty-four".