206203136 has 36 divisors (see below), whose sum is σ = 413486892. Its totient is φ = 102629376.

The previous prime is 206203133. The next prime is 206203157. The reversal of 206203136 is 631302602.

It can be written as a sum of positive squares in 2 ways, for example, as 17305600 + 188897536 = 4160^2 + 13744^2 .

It is not an unprimeable number, because it can be changed into a prime (206203133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57920 + ... + 61376.

It is an arithmetic number, because the mean of its divisors is an integer number (11485747).

Almost surely, 2^206203136 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 206203136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206743446).

206203136 is an abundant number, since it is smaller than the sum of its proper divisors (207283756).

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

206203136 is an equidigital number, since it uses as much as digits as its factorization.

206203136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706 (or 3692 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 206203136 is about 14359.7749285983. The cubic root of 206203136 is about 590.7881222814.

Adding to 206203136 its reverse (631302602), we get a palindrome (837505738).

The spelling of 206203136 in words is "two hundred six million, two hundred three thousand, one hundred thirty-six".