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206286406 = 22293131439
BaseRepresentation
bin11000100101110…
…10111001000110
3112101011102202021
430102322321012
5410302131111
632245233354
75053256044
oct1422727106
9471142667
10206286406
11a6497037
125910285a
1333978781
141d57b394
151319bd71
hexc4bae46

206286406 has 16 divisors (see below), whose sum is σ = 311990400. Its totient is φ = 102293568.

The previous prime is 206286403. The next prime is 206286407. The reversal of 206286406 is 604682602.

206286406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206286403) 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, 142635 + ... + 144073.

It is an arithmetic number, because the mean of its divisors is an integer number (19499400).

Almost surely, 2206286406 is an apocalyptic number.

206286406 is a deficient number, since it is larger than the sum of its proper divisors (105703994).

206286406 is a wasteful number, since it uses less digits than its factorization.

206286406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 206286406 is about 14362.6740546460. The cubic root of 206286406 is about 590.8676366013.

The spelling of 206286406 in words is "two hundred six million, two hundred eighty-six thousand, four hundred six".

Divisors: 1 2 229 313 458 626 1439 2878 71677 143354 329531 450407 659062 900814 103143203 206286406