2204856 has 48 divisors (see below), whose sum is σ = 6046560. Its totient is φ = 725760.

The previous prime is 2204843. The next prime is 2204863. The reversal of 2204856 is 6584022.

It is a super-2 number, since 2×2204856² = 9722779961472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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, 8001 + ... + 8271.

It is an arithmetic number, because the mean of its divisors is an integer number (125970).

2^2204856 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 2204856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3023280).

2204856 is an abundant number, since it is smaller than the sum of its proper divisors (3841704).

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

2204856 is a wasteful number, since it uses less digits than its factorization.

2204856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2204856 is about 1484.8757523780. The cubic root of 2204856 is about 130.1547663662.

Adding to 2204856 its reverse (6584022), we get a palindrome (8788878).

The spelling of 2204856 in words is "two million, two hundred four thousand, eight hundred fifty-six".