20804127 has 8 divisors (see below), whose sum is σ = 28329216. Its totient is φ = 13574232.

The previous prime is 20804123. The next prime is 20804137. The reversal of 20804127 is 72140802.

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

It is not a de Polignac number, because 20804127 - 2² = 20804123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20804097 and 20804106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20804123) 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, 73633 + ... + 73914.

It is an arithmetic number, because the mean of its divisors is an integer number (3541152).

Almost surely, 2^20804127 is an apocalyptic number.

20804127 is a deficient number, since it is larger than the sum of its proper divisors (7525089).

20804127 is a wasteful number, since it uses less digits than its factorization.

20804127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147597.

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

The square root of 20804127 is about 4561.1541302613. The cubic root of 20804127 is about 275.0319610236.

Adding to 20804127 its reverse (72140802), we get a palindrome (92944929).

The spelling of 20804127 in words is "twenty million, eight hundred four thousand, one hundred twenty-seven".