2104872 has 128 divisors (see below), whose sum is σ = 7050240. Its totient is φ = 506880.

The previous prime is 2104871. The next prime is 2104901. The reversal of 2104872 is 2784012.

It is a super-2 number, since 2×2104872² = 8860972272768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2104871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31383 + ... + 31449.

It is an arithmetic number, because the mean of its divisors is an integer number (55080).

2^2104872 is an apocalyptic number.

2104872 is a gapful number since it is divisible by the number (22) 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 2104872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3525120).

2104872 is an abundant number, since it is smaller than the sum of its proper divisors (4945368).

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

2104872 is a wasteful number, since it uses less digits than its factorization.

2104872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2104872 is about 1450.8177004710. The cubic root of 2104872 is about 128.1568714684.

Adding to 2104872 its reverse (2784012), we get a palindrome (4888884).

The spelling of 2104872 in words is "two million, one hundred four thousand, eight hundred seventy-two".