20704027 has 4 divisors (see below), whose sum is σ = 21185560. Its totient is φ = 20222496.

The previous prime is 20704007. The next prime is 20704037. The reversal of 20704027 is 72040702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20704027 - 2¹⁹ = 20179739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20703989 and 20704007.

It is not an unprimeable number, because it can be changed into a prime (20704007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240702 + ... + 240787.

It is an arithmetic number, because the mean of its divisors is an integer number (5296390).

Almost surely, 2^20704027 is an apocalyptic number.

20704027 is a deficient number, since it is larger than the sum of its proper divisors (481533).

20704027 is an equidigital number, since it uses as much as digits as its factorization.

20704027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481532.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20704027 is about 4550.1677991037. The cubic root of 20704027 is about 274.5901420714.

Adding to 20704027 its reverse (72040702), we get a palindrome (92744729).

The spelling of 20704027 in words is "twenty million, seven hundred four thousand, twenty-seven".