206432144 has 20 divisors (see below), whose sum is σ = 400264560. Its totient is φ = 103138080.

The previous prime is 206432143. The next prime is 206432197. The reversal of 206432144 is 441234602.

206432144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×206432144² = 85228460152873472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206432143) 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, 21179 + ... + 29349.

It is an arithmetic number, because the mean of its divisors is an integer number (20013228).

Almost surely, 2^206432144 is an apocalyptic number.

It is an amenable number.

206432144 is a deficient number, since it is larger than the sum of its proper divisors (193832416).

206432144 is a wasteful number, since it uses less digits than its factorization.

206432144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9758 (or 9752 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 206432144 is about 14367.7466570092. The cubic root of 206432144 is about 591.0067499799.

Adding to 206432144 its reverse (441234602), we get a palindrome (647666746).

The spelling of 206432144 in words is "two hundred six million, four hundred thirty-two thousand, one hundred forty-four".