20104641 has 12 divisors (see below), whose sum is σ = 30568720. Its totient is φ = 12697560.

The previous prime is 20104639. The next prime is 20104657. The reversal of 20104641 is 14640102.

20104641 is a `hidden beast` number, since 20 + 1 + 0 + 4 + 641 = 666.

It is not a de Polignac number, because 20104641 - 2¹ = 20104639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20104141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58615 + ... + 58956.

Almost surely, 2^20104641 is an apocalyptic number.

It is an amenable number.

20104641 is a deficient number, since it is larger than the sum of its proper divisors (10464079).

20104641 is a wasteful number, since it uses less digits than its factorization.

20104641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117596 (or 117593 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20104641 is about 4483.8199116378. The cubic root of 20104641 is about 271.9143373917.

Adding to 20104641 its reverse (14640102), we get a palindrome (34744743).

The spelling of 20104641 in words is "twenty million, one hundred four thousand, six hundred forty-one".