20107206 has 96 divisors (see below), whose sum is σ = 54063360. Its totient is φ = 5272128.

The previous prime is 20107183. The next prime is 20107207. The reversal of 20107206 is 60270102.

It is a happy number.

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 (20107207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88465 + ... + 88691.

It is an arithmetic number, because the mean of its divisors is an integer number (563160).

Almost surely, 2^20107206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20107206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27031680).

20107206 is an abundant number, since it is smaller than the sum of its proper divisors (33956154).

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

20107206 is a wasteful number, since it uses less digits than its factorization.

20107206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20107206 is about 4484.1059309521. The cubic root of 20107206 is about 271.9259007353.

Adding to 20107206 its reverse (60270102), we get a palindrome (80377308).

It can be divided in two parts, 2010 and 7206, that added together give a square (9216 = 96²).

The spelling of 20107206 in words is "twenty million, one hundred seven thousand, two hundred six".