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206670052 = 22317162989
BaseRepresentation
bin11000101000110…
…00100011100100
3112101212221000101
430110120203210
5410401420202
632301353444
75056444411
oct1424304344
9471787011
10206670052
11a67292a6
1259268884
1333a81294
141d63b108
1513225887
hexc5188e4

206670052 has 12 divisors (see below), whose sum is σ = 362815740. Its totient is φ = 103008416.

The previous prime is 206670041. The next prime is 206670059. The reversal of 206670052 is 250076602.

It can be written as a sum of positive squares in 2 ways, for example, as 11397376 + 195272676 = 3376^2 + 13974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 206670052.

It is not an unprimeable number, because it can be changed into a prime (206670059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80227 + ... + 82762.

It is an arithmetic number, because the mean of its divisors is an integer number (30234645).

Almost surely, 2206670052 is an apocalyptic number.

It is an amenable number.

206670052 is a deficient number, since it is larger than the sum of its proper divisors (156145688).

206670052 is a wasteful number, since it uses less digits than its factorization.

206670052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163310 (or 163308 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 206670052 is about 14376.0235113887. The cubic root of 206670052 is about 591.2337030939.

The spelling of 206670052 in words is "two hundred six million, six hundred seventy thousand, fifty-two".

Divisors: 1 2 4 317 634 1268 162989 325978 651956 51667513 103335026 206670052