2001940 has 24 divisors (see below), whose sum is σ = 4233600. Its totient is φ = 795168.

The previous prime is 2001919. The next prime is 2001953. The reversal of 2001940 is 491002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3729 + ... + 4231.

It is an arithmetic number, because the mean of its divisors is an integer number (176400).

2^2001940 is an apocalyptic number.

2001940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001940 is an abundant number, since it is smaller than the sum of its proper divisors (2231660).

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

2001940 is a wasteful number, since it uses less digits than its factorization.

2001940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2001940 is about 1414.8992897023. The cubic root of 2001940 is about 126.0328292721.

Adding to 2001940 its reverse (491002), we get a palindrome (2492942).

The spelling of 2001940 in words is "two million, one thousand, nine hundred forty".