2107840 has 56 divisors (see below), whose sum is σ = 5742432. Its totient is φ = 721920.

The previous prime is 2107837. The next prime is 2107849. The reversal of 2107840 is 487012.

2107840 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2107849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770 + ... + 2710.

2^2107840 is an apocalyptic number.

2107840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2107840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2871216).

2107840 is an abundant number, since it is smaller than the sum of its proper divisors (3634592).

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

2107840 is an equidigital number, since it uses as much as digits as its factorization.

2107840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 2107840 is about 1451.8402115935. The cubic root of 2107840 is about 128.2170795559.

The spelling of 2107840 in words is "two million, one hundred seven thousand, eight hundred forty".