2041840 has 20 divisors (see below), whose sum is σ = 4747464. Its totient is φ = 816704.

The previous prime is 2041817. The next prime is 2041849. The reversal of 2041840 is 481402.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×2041840² = 8338221171200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2041849) 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 3 ways as a sum of consecutive naturals, for example, 12682 + ... + 12841.

2^2041840 is an apocalyptic number.

2041840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2041840 is an abundant number, since it is smaller than the sum of its proper divisors (2705624).

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

2041840 is a wasteful number, since it uses less digits than its factorization.

2041840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25536 (or 25530 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2041840 is about 1428.9296693680. The cubic root of 2041840 is about 126.8646334966.

The spelling of 2041840 in words is "two million, forty-one thousand, eight hundred forty".