2108340 has 144 divisors (see below), whose sum is σ = 7429968. Its totient is φ = 479232.

The previous prime is 2108339. The next prime is 2108347. The reversal of 2108340 is 438012.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 36 + 2108304 = 6^2 + 1452^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2108347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39754 + ... + 39806.

It is an arithmetic number, because the mean of its divisors is an integer number (51597).

2^2108340 is an apocalyptic number.

2108340 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 2108340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3714984).

2108340 is an abundant number, since it is smaller than the sum of its proper divisors (5321628).

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

2108340 is a wasteful number, since it uses less digits than its factorization.

2108340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2108340 is about 1452.0123966413. The cubic root of 2108340 is about 128.2272168642.

The spelling of 2108340 in words is "two million, one hundred eight thousand, three hundred forty".