20053863 has 12 divisors (see below), whose sum is σ = 30670848. Its totient is φ = 12582720.

The previous prime is 20053841. The next prime is 20053871. The reversal of 20053863 is 36835002.

It is not a de Polignac number, because 20053863 - 2²² = 15859559 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20053883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65383 + ... + 65688.

It is an arithmetic number, because the mean of its divisors is an integer number (2555904).

Almost surely, 2^20053863 is an apocalyptic number.

20053863 is a deficient number, since it is larger than the sum of its proper divisors (10616985).

20053863 is a wasteful number, since it uses less digits than its factorization.

20053863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131094 (or 131091 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20053863 is about 4478.1539723417. The cubic root of 20053863 is about 271.6852210261.

Adding to 20053863 its reverse (36835002), we get a palindrome (56888865).

The spelling of 20053863 in words is "twenty million, fifty-three thousand, eight hundred sixty-three".