2104440 has 128 divisors (see below), whose sum is σ = 7257600. Its totient is φ = 483840.

The previous prime is 2104433. The next prime is 2104441. The reversal of 2104440 is 444012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29605 + ... + 29675.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2^2104440 is an apocalyptic number.

2104440 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 2104440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3628800).

2104440 is an abundant number, since it is smaller than the sum of its proper divisors (5153160).

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

2104440 is a wasteful number, since it uses less digits than its factorization.

2104440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2104440 is about 1450.6688112729. The cubic root of 2104440 is about 128.1481033095.

Adding to 2104440 its reverse (444012), we get a palindrome (2548452).

The spelling of 2104440 in words is "two million, one hundred four thousand, four hundred forty".