2044540 has 24 divisors (see below), whose sum is σ = 4328352. Its totient is φ = 811200.

The previous prime is 2044519. The next prime is 2044541. The reversal of 2044540 is 454402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2682 + ... + 3358.

It is an arithmetic number, because the mean of its divisors is an integer number (180348).

2^2044540 is an apocalyptic number.

2044540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2044540 is an abundant number, since it is smaller than the sum of its proper divisors (2283812).

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

2044540 is a wasteful number, since it uses less digits than its factorization.

2044540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2044540 is about 1429.8741203337. The cubic root of 2044540 is about 126.9205281210.

Adding to 2044540 its reverse (454402), we get a palindrome (2498942).

The spelling of 2044540 in words is "two million, forty-four thousand, five hundred forty".