20104104 has 32 divisors (see below), whose sum is σ = 51488640. Its totient is φ = 6537600.

The previous prime is 20104067. The next prime is 20104129. The reversal of 20104104 is 40140102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20104104.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9232 + ... + 11199.

It is an arithmetic number, because the mean of its divisors is an integer number (1609020).

Almost surely, 2^20104104 is an apocalyptic number.

20104104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20104104 is an abundant number, since it is smaller than the sum of its proper divisors (31384536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20104104 is a wasteful number, since it uses less digits than its factorization.

20104104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20481 (or 20477 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 20104104 is about 4483.7600292612. The cubic root of 20104104 is about 271.9119164034.

Adding to 20104104 its reverse (40140102), we get a palindrome (60244206).

The spelling of 20104104 in words is "twenty million, one hundred four thousand, one hundred four".