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206067385 = 5317611747
BaseRepresentation
bin11000100100001…
…01011010111001
3112100202022022101
430102011122321
5410223124020
632240423401
75051354356
oct1422053271
9470668271
10206067385
11a6357527
1259017b61
13338ccb84
141d52162d
151315700a
hexc4856b9

206067385 has 16 divisors (see below), whose sum is σ = 255739392. Its totient is φ = 159235200.

The previous prime is 206067383. The next prime is 206067391. The reversal of 206067385 is 583760602.

It is not a de Polignac number, because 206067385 - 21 = 206067383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206067383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117082 + ... + 118828.

It is an arithmetic number, because the mean of its divisors is an integer number (15983712).

Almost surely, 2206067385 is an apocalyptic number.

It is an amenable number.

206067385 is a deficient number, since it is larger than the sum of its proper divisors (49672007).

206067385 is a wasteful number, since it uses less digits than its factorization.

206067385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 206067385 is about 14355.0473701761. The cubic root of 206067385 is about 590.6584480745.

The spelling of 206067385 in words is "two hundred six million, sixty-seven thousand, three hundred eighty-five".

Divisors: 1 5 31 155 761 1747 3805 8735 23591 54157 117955 270785 1329467 6647335 41213477 206067385