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206384029 = 1712140237
BaseRepresentation
bin11000100110100…
…10101110011101
3112101100101122221
430103102232131
5410313242104
632251305341
75054143465
oct1423225635
9471311587
10206384029
11a6553415
125914b251
13339b1037
141d5a4ba5
15131bac54
hexc4d2b9d

206384029 has 4 divisors (see below), whose sum is σ = 218524284. Its totient is φ = 194243776.

The previous prime is 206384027. The next prime is 206384051. The reversal of 206384029 is 920483602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183602500 + 22781529 = 13550^2 + 4773^2 .

It is a cyclic number.

It is not a de Polignac number, because 206384029 - 21 = 206384027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206383985 and 206384003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206384021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6070102 + ... + 6070135.

It is an arithmetic number, because the mean of its divisors is an integer number (54631071).

Almost surely, 2206384029 is an apocalyptic number.

It is an amenable number.

206384029 is a deficient number, since it is larger than the sum of its proper divisors (12140255).

206384029 is a wasteful number, since it uses less digits than its factorization.

206384029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12140254.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 206384029 is about 14366.0721493385. The cubic root of 206384029 is about 590.9608293224.

The spelling of 206384029 in words is "two hundred six million, three hundred eighty-four thousand, twenty-nine".

Divisors: 1 17 12140237 206384029