2081940 has 48 divisors (see below), whose sum is σ = 6663552. Its totient is φ = 475776.

The previous prime is 2081927. The next prime is 2081969. The reversal of 2081940 is 491802.

It is a self number, because there is not a number n which added to its sum of digits gives 2081940.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2059 + ... + 2898.

It is an arithmetic number, because the mean of its divisors is an integer number (138824).

2^2081940 is an apocalyptic number.

2081940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2081940 is an abundant number, since it is smaller than the sum of its proper divisors (4581612).

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

2081940 is a wasteful number, since it uses less digits than its factorization.

2081940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4976 (or 4974 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2081940 is about 1442.8929274205. The cubic root of 2081940 is about 127.6897597297.

The spelling of 2081940 in words is "two million, eighty-one thousand, nine hundred forty".