2203940 has 24 divisors (see below), whose sum is σ = 4656960. Its totient is φ = 876128.

The previous prime is 2203939. The next prime is 2203951. The reversal of 2203940 is 493022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5051 + ... + 5469.

It is an arithmetic number, because the mean of its divisors is an integer number (194040).

2^2203940 is an apocalyptic number.

2203940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2203940 is an abundant number, since it is smaller than the sum of its proper divisors (2453020).

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

2203940 is a wasteful number, since it uses less digits than its factorization.

2203940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2203940 is about 1484.5672770205. The cubic root of 2203940 is about 130.1367397498.

Adding to 2203940 its reverse (493022), we get a palindrome (2696962).

The spelling of 2203940 in words is "two million, two hundred three thousand, nine hundred forty".