20200686 has 64 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 5702400.

The previous prime is 20200681. The next prime is 20200703. The reversal of 20200686 is 68600202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111516 + ... + 111696.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

Almost surely, 2^20200686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20200686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23587200).

20200686 is an abundant number, since it is smaller than the sum of its proper divisors (26973714).

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

20200686 is a wasteful number, since it uses less digits than its factorization.

20200686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20200686 is about 4494.5173266993. The cubic root of 20200686 is about 272.3466510871.

Adding to 20200686 its reverse (68600202), we get a palindrome (88800888).

The spelling of 20200686 in words is "twenty million, two hundred thousand, six hundred eighty-six".