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206984146 = 21747129527
BaseRepresentation
bin11000101011001…
…01001111010010
3112102110212212111
430111211033102
5410441443041
632312215534
75062223215
oct1425451722
9472425774
10206984146
11a6923286
125939a5aa
1333b61235
141d6bd77c
1513288981
hexc5653d2

206984146 has 16 divisors (see below), whose sum is σ = 335736576. Its totient is φ = 95331136.

The previous prime is 206984143. The next prime is 206984147. The reversal of 206984146 is 641489602.

206984146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 206984099 and 206984108.

It is not an unprimeable number, because it can be changed into a prime (206984143) 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, 63166 + ... + 66361.

It is an arithmetic number, because the mean of its divisors is an integer number (20983536).

Almost surely, 2206984146 is an apocalyptic number.

206984146 is a deficient number, since it is larger than the sum of its proper divisors (128752430).

206984146 is a wasteful number, since it uses less digits than its factorization.

206984146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129593.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 206984146 is about 14386.9435948015. The cubic root of 206984146 is about 591.5330674836.

The spelling of 206984146 in words is "two hundred six million, nine hundred eighty-four thousand, one hundred forty-six".

Divisors: 1 2 17 34 47 94 799 1598 129527 259054 2201959 4403918 6087769 12175538 103492073 206984146