20104115 has 8 divisors (see below), whose sum is σ = 25544160. Its totient is φ = 15137152.

The previous prime is 20104067. The next prime is 20104129. The reversal of 20104115 is 51140102.

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

It is a cyclic number.

It is not a de Polignac number, because 20104115 - 2⁸ = 20103859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20104115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118175 + ... + 118344.

It is an arithmetic number, because the mean of its divisors is an integer number (3193020).

Almost surely, 2^20104115 is an apocalyptic number.

20104115 is a deficient number, since it is larger than the sum of its proper divisors (5440045).

20104115 is a wasteful number, since it uses less digits than its factorization.

20104115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236541.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 20104115 is about 4483.7612559100. The cubic root of 20104115 is about 271.9119659958.

Adding to 20104115 its reverse (51140102), we get a palindrome (71244217).

The spelling of 20104115 in words is "twenty million, one hundred four thousand, one hundred fifteen".