20003106 has 32 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 6444416.

The previous prime is 20003089. The next prime is 20003107. The reversal of 20003106 is 60130002.

It is a super-3 number, since 3×20003106³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20003091 and 20003100.

It is not an unprimeable number, because it can be changed into a prime (20003107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24700 + ... + 25496.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^20003106 is an apocalyptic number.

20003106 is the 2391-st nonagonal number.

20003106 is an abundant number, since it is smaller than the sum of its proper divisors (21365214).

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

20003106 is a wasteful number, since it uses less digits than its factorization.

20003106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20003106 is about 4472.4832028751. The cubic root of 20003106 is about 271.4558125673.

Adding to 20003106 its reverse (60130002), we get a palindrome (80133108).

The spelling of 20003106 in words is "twenty million, three thousand, one hundred six".