2104815 has 8 divisors (see below), whose sum is σ = 3367728. Its totient is φ = 1122560.

The previous prime is 2104811. The next prime is 2104841. The reversal of 2104815 is 5184012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2104815 - 2² = 2104811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2104791 and 2104800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104811) 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, 70146 + ... + 70175.

It is an arithmetic number, because the mean of its divisors is an integer number (420966).

2^2104815 is an apocalyptic number.

2104815 is a deficient number, since it is larger than the sum of its proper divisors (1262913).

2104815 is a wasteful number, since it uses less digits than its factorization.

2104815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140329.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2104815 is about 1450.7980562435. The cubic root of 2104815 is about 128.1557146273.

Adding to 2104815 its reverse (5184012), we get a palindrome (7288827).

The spelling of 2104815 in words is "two million, one hundred four thousand, eight hundred fifteen".