20104265 has 8 divisors (see below), whose sum is σ = 24299520. Its totient is φ = 15967152.

The previous prime is 20104241. The next prime is 20104307. The reversal of 20104265 is 56240102.

It is a happy number.

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 20104265 - 2¹⁰ = 20103241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13769 + ... + 15158.

It is an arithmetic number, because the mean of its divisors is an integer number (3037440).

Almost surely, 2^20104265 is an apocalyptic number.

It is an amenable number.

20104265 is a deficient number, since it is larger than the sum of its proper divisors (4195255).

20104265 is a wasteful number, since it uses less digits than its factorization.

20104265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29071.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20104265 is about 4483.7779829068. Note that the first 3 decimals coincide. The cubic root of 20104265 is about 271.9126422536.

Adding to 20104265 its reverse (56240102), we get a palindrome (76344367).

The spelling of 20104265 in words is "twenty million, one hundred four thousand, two hundred sixty-five".