2043940 has 12 divisors (see below), whose sum is σ = 4292316. Its totient is φ = 817568.

The previous prime is 2043931. The next prime is 2043953. The reversal of 2043940 is 493402.

It can be written as a sum of positive squares in 2 ways, for example, as 1201216 + 842724 = 1096^2 + 918^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51079 + ... + 51118.

It is an arithmetic number, because the mean of its divisors is an integer number (357693).

2^2043940 is an apocalyptic number.

2043940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2043940 is an abundant number, since it is smaller than the sum of its proper divisors (2248376).

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

2043940 is a wasteful number, since it uses less digits than its factorization.

2043940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102206 (or 102204 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2043940 is about 1429.6642962598. The cubic root of 2043940 is about 126.9081113479.

The spelling of 2043940 in words is "two million, forty-three thousand, nine hundred forty".