20108412 has 60 divisors (see below), whose sum is σ = 53604936. Its totient is φ = 6570720.

The previous prime is 20108411. The next prime is 20108419. The reversal of 20108412 is 21480102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20108411) 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 19 ways as a sum of consecutive naturals, for example, 16587 + ... + 17757.

Almost surely, 2^20108412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20108412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26802468).

20108412 is an abundant number, since it is smaller than the sum of its proper divisors (33496524).

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

20108412 is a wasteful number, since it uses less digits than its factorization.

20108412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 20108412 is about 4484.2404039034. The cubic root of 20108412 is about 271.9313371955.

Adding to 20108412 its reverse (21480102), we get a palindrome (41588514).

The spelling of 20108412 in words is "twenty million, one hundred eight thousand, four hundred twelve".