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206730271 = 1118899949
BaseRepresentation
bin11000101001001…
…11010000011111
3112101222222121201
430110213100133
5410410332041
632302540331
75060115106
oct1424472037
9471888551
10206730271
11a676a570
12592976a7
1333aa2807
141d65503d
1513238631
hexc52741f

206730271 has 8 divisors (see below), whose sum is σ = 225666000. Its totient is φ = 187818240.

The previous prime is 206730259. The next prime is 206730311. The reversal of 206730271 is 172037602.

206730271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206730271 - 29 = 206729759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206739271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15805 + ... + 25753.

It is an arithmetic number, because the mean of its divisors is an integer number (28208250).

Almost surely, 2206730271 is an apocalyptic number.

206730271 is a deficient number, since it is larger than the sum of its proper divisors (18935729).

206730271 is a wasteful number, since it uses less digits than its factorization.

206730271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11849.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 206730271 is about 14378.1177836322. The cubic root of 206730271 is about 591.2911215806.

Adding to 206730271 its reverse (172037602), we get a palindrome (378767873).

The spelling of 206730271 in words is "two hundred six million, seven hundred thirty thousand, two hundred seventy-one".

Divisors: 1 11 1889 9949 20779 109439 18793661 206730271