20104463 has 4 divisors (see below), whose sum is σ = 20115480. Its totient is φ = 20093448.

The previous prime is 20104433. The next prime is 20104493. The reversal of 20104463 is 36440102.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 36440102 = 2 ⋅18220051.

It is an interprime number because it is at equal distance from previous prime (20104433) and next prime (20104493).

It is a cyclic number.

It is not a de Polignac number, because 20104463 - 2⁸ = 20104207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104423) 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, 2045 + ... + 6662.

It is an arithmetic number, because the mean of its divisors is an integer number (5028870).

Almost surely, 2^20104463 is an apocalyptic number.

20104463 is a deficient number, since it is larger than the sum of its proper divisors (11017).

20104463 is an equidigital number, since it uses as much as digits as its factorization.

20104463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11016.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20104463 is about 4483.8000624470. The cubic root of 20104463 is about 271.9135349087.

Adding to 20104463 its reverse (36440102), we get a palindrome (56544565).

The spelling of 20104463 in words is "twenty million, one hundred four thousand, four hundred sixty-three".