2204845 has 8 divisors (see below), whose sum is σ = 2689560. Its totient is φ = 1734720.

The previous prime is 2204843. The next prime is 2204863. The reversal of 2204845 is 5484022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 316969 + 1887876 = 563^2 + 1374^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2204845 - 2¹ = 2204843 is a prime.

It is a super-2 number, since 2×2204845² = 9722682948050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2204843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3310 + ... + 3919.

It is an arithmetic number, because the mean of its divisors is an integer number (336195).

2^2204845 is an apocalyptic number.

It is an amenable number.

2204845 is a deficient number, since it is larger than the sum of its proper divisors (484715).

2204845 is an equidigital number, since it uses as much as digits as its factorization.

2204845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7295.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2204845 is about 1484.8720483597. The cubic root of 2204845 is about 130.1545499190.

Adding to 2204845 its reverse (5484022), we get a palindrome (7688867).

The spelling of 2204845 in words is "two million, two hundred four thousand, eight hundred forty-five".