20771027 has 4 divisors (see below), whose sum is σ = 20780280. Its totient is φ = 20761776.

The previous prime is 20770973. The next prime is 20771029. The reversal of 20771027 is 72017702.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20771027 - 2⁶ = 20770963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20770987 and 20771005.

It is not an unprimeable number, because it can be changed into a prime (20771029) 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, 1124 + ... + 6542.

It is an arithmetic number, because the mean of its divisors is an integer number (5195070).

Almost surely, 2^20771027 is an apocalyptic number.

20771027 is a deficient number, since it is larger than the sum of its proper divisors (9253).

20771027 is an equidigital number, since it uses as much as digits as its factorization.

20771027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9252.

The product of its (nonzero) digits is 1372, while the sum is 26.

The square root of 20771027 is about 4557.5242182571. The cubic root of 20771027 is about 274.8860221882.

Adding to 20771027 its reverse (72017702), we get a palindrome (92788729).

The spelling of 20771027 in words is "twenty million, seven hundred seventy-one thousand, twenty-seven".