2203540 has 24 divisors (see below), whose sum is σ = 4900392. Its totient is φ = 829440.

The previous prime is 2203519. The next prime is 2203541. The reversal of 2203540 is 453022.

2203540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1024144 + 1179396 = 1012^2 + 1086^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2901 + ... + 3580.

It is an arithmetic number, because the mean of its divisors is an integer number (204183).

2^2203540 is an apocalyptic number.

2203540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2203540 is an abundant number, since it is smaller than the sum of its proper divisors (2696852).

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

2203540 is a wasteful number, since it uses less digits than its factorization.

2203540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6507 (or 6505 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 2203540 is about 1484.4325515159. The cubic root of 2203540 is about 130.1288662981.

Adding to 2203540 its reverse (453022), we get a palindrome (2656562).

The spelling of 2203540 in words is "two million, two hundred three thousand, five hundred forty".