20104212 has 12 divisors (see below), whose sum is σ = 46909856. Its totient is φ = 6701400.

The previous prime is 20104207. The next prime is 20104229. The reversal of 20104212 is 21240102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1675351 = 20104212 / (2 + 0 + 1 + 0 + 4 + 2 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837664 + ... + 837687.

Almost surely, 2^20104212 is an apocalyptic number.

It is an amenable number.

20104212 is an abundant number, since it is smaller than the sum of its proper divisors (26805644).

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

20104212 is a wasteful number, since it uses less digits than its factorization.

20104212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675358 (or 1675356 counting only the distinct ones).

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

The square root of 20104212 is about 4483.7720727084. The cubic root of 20104212 is about 271.9124033095.

Adding to 20104212 its reverse (21240102), we get a palindrome (41344314).

The spelling of 20104212 in words is "twenty million, one hundred four thousand, two hundred twelve".