2104720 has 20 divisors (see below), whose sum is σ = 4893660. Its totient is φ = 841856.

The previous prime is 2104717. The next prime is 2104723. The reversal of 2104720 is 274012.

2104720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2104717) and next prime (2104723).

It can be written as a sum of positive squares in 2 ways, for example, as 425104 + 1679616 = 652^2 + 1296^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2104694 and 2104703.

It is not an unprimeable number, because it can be changed into a prime (2104723) 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 3 ways as a sum of consecutive naturals, for example, 13075 + ... + 13234.

It is an arithmetic number, because the mean of its divisors is an integer number (244683).

2^2104720 is an apocalyptic number.

2104720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2104720 is an abundant number, since it is smaller than the sum of its proper divisors (2788940).

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

2104720 is a wasteful number, since it uses less digits than its factorization.

2104720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26322 (or 26316 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2104720 is about 1450.7653152733. The cubic root of 2104720 is about 128.1537865123.

Adding to 2104720 its reverse (274012), we get a palindrome (2378732).

The spelling of 2104720 in words is "two million, one hundred four thousand, seven hundred twenty".