206144 has 14 divisors (see below), whose sum is σ = 409194. Its totient is φ = 103040.

The previous prime is 206123. The next prime is 206153. The reversal of 206144 is 441602.

It can be written as a sum of positive squares in only one way, i.e., 193600 + 12544 = 440^2 + 112^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 206144.

It is an unprimeable number.

206144 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1547 + ... + 1674.

2²⁰⁶¹⁴⁴ is an apocalyptic number.

It is an amenable number.

206144 is a deficient number, since it is larger than the sum of its proper divisors (203050).

206144 is an equidigital number, since it uses as much as digits as its factorization.

206144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233 (or 3223 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 206144 is about 454.0308359572. The cubic root of 206144 is about 59.0731640459.

Adding to 206144 its reverse (441602), we get a palindrome (647746).

The spelling of 206144 in words is "two hundred six thousand, one hundred forty-four".