2204540 has 48 divisors (see below), whose sum is σ = 5103840. Its totient is φ = 794880.

The previous prime is 2204537. The next prime is 2204557. The reversal of 2204540 is 454022.

2204540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2204540² = 9719993223200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15791 + ... + 15929.

It is an arithmetic number, because the mean of its divisors is an integer number (106330).

2^2204540 is an apocalyptic number.

2204540 is a gapful number since it is divisible by the number (20) 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 2204540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2551920).

2204540 is an abundant number, since it is smaller than the sum of its proper divisors (2899300).

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

2204540 is a wasteful number, since it uses less digits than its factorization.

2204540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 2204540 is about 1484.7693423559. The cubic root of 2204540 is about 130.1485481414.

Adding to 2204540 its reverse (454022), we get a palindrome (2658562).

It can be divided in two parts, 2204 and 540, that added together give a cube (2744 = 14³).

The spelling of 2204540 in words is "two million, two hundred four thousand, five hundred forty".