20027863 has 2 divisors, whose sum is σ = 20027864. Its totient is φ = 20027862.

The previous prime is 20027851. The next prime is 20027869. The reversal of 20027863 is 36872002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20027863 is a prime.

It is a super-2 number, since 2×20027863² = 802230592693538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20027869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013931 + 10013932.

It is an arithmetic number, because the mean of its divisors is an integer number (10013932).

Almost surely, 2^20027863 is an apocalyptic number.

20027863 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027863 is an equidigital number, since it uses as much as digits as its factorization.

20027863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20027863 is about 4475.2500488800. The cubic root of 20027863 is about 271.5677561979.

Adding to 20027863 its reverse (36872002), we get a palindrome (56899865).

The spelling of 20027863 in words is "twenty million, twenty-seven thousand, eight hundred sixty-three".