206224 has 10 divisors (see below), whose sum is σ = 399590. Its totient is φ = 103104.

The previous prime is 206221. The next prime is 206233. The reversal of 206224 is 422602.

It can be written as a sum of positive squares in only one way, i.e., 186624 + 19600 = 432^2 + 140^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 12889 = 206224 / (2 + 0 + 6 + 2 + 2 + 4).

It is a d-powerful number, because it can be written as 2⁷ + 0 + 2¹³ + 6⁴ + 2¹⁷ + 4⁸ .

It is a junction number, because it is equal to n+sod(n) for n = 206198 and 206207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6429 + ... + 6460.

It is an arithmetic number, because the mean of its divisors is an integer number (39959).

2²⁰⁶²²⁴ is an apocalyptic number.

It is an amenable number.

206224 is a deficient number, since it is larger than the sum of its proper divisors (193366).

206224 is a wasteful number, since it uses less digits than its factorization.

206224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12897 (or 12891 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 206224 is about 454.1189271546. The cubic root of 206224 is about 59.0808047274.

Adding to 206224 its reverse (422602), we get a palindrome (628826).

The spelling of 206224 in words is "two hundred six thousand, two hundred twenty-four".