2185056 has 72 divisors (see below), whose sum is σ = 6466824. Its totient is φ = 725760.

The previous prime is 2185037. The next prime is 2185091. The reversal of 2185056 is 6505812.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7636 + ... + 7916.

It is an arithmetic number, because the mean of its divisors is an integer number (89817).

2^2185056 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 2185056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3233412).

2185056 is an abundant number, since it is smaller than the sum of its proper divisors (4281768).

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

2185056 is an equidigital number, since it uses as much as digits as its factorization.

2185056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2185056 is about 1478.1934920706. The cubic root of 2185056 is about 129.7639899379.

The spelling of 2185056 in words is "two million, one hundred eighty-five thousand, fifty-six".