1085784 has 64 divisors (see below), whose sum is σ = 3248640. Its totient is φ = 295680.

The previous prime is 1085779. The next prime is 1085801. The reversal of 1085784 is 4875801.

It is a happy number.

It is a nialpdrome in base 12.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3724 + ... + 4004.

It is an arithmetic number, because the mean of its divisors is an integer number (50760).

2^1085784 is an apocalyptic number.

1085784 is a gapful number since it is divisible by the number (14) 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 1085784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1624320).

1085784 is an abundant number, since it is smaller than the sum of its proper divisors (2162856).

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

1085784 is a wasteful number, since it uses less digits than its factorization.

1085784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 1085784 is about 1042.0095968848. The cubic root of 1085784 is about 102.7813882237.

The spelling of 1085784 in words is "one million, eighty-five thousand, seven hundred eighty-four".