20104677 has 12 divisors (see below), whose sum is σ = 29150784. Its totient is φ = 13352040.

The previous prime is 20104657. The next prime is 20104697. The reversal of 20104677 is 77640102.

It is an interprime number because it is at equal distance from previous prime (20104657) and next prime (20104697).

It is not a de Polignac number, because 20104677 - 2⁷ = 20104549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20104677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1683 + ... + 6560.

It is an arithmetic number, because the mean of its divisors is an integer number (2429232).

Almost surely, 2^20104677 is an apocalyptic number.

It is an amenable number.

20104677 is a deficient number, since it is larger than the sum of its proper divisors (9046107).

20104677 is a wasteful number, since it uses less digits than its factorization.

20104677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8520 (or 8517 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20104677 is about 4483.8239260702. The cubic root of 20104677 is about 271.9144996910.

Adding to 20104677 its reverse (77640102), we get a palindrome (97744779).

The spelling of 20104677 in words is "twenty million, one hundred four thousand, six hundred seventy-seven".