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206161067 = 7317113381
BaseRepresentation
bin11000100100111…
…00010010101011
3112100221001211002
430102130102223
5410234123232
632242425215
75052224450
oct1422342253
9470831732
10206161067
11a6410952
125906220b
13339336c8
141d547827
1513174b62
hexc49c4ab

206161067 has 16 divisors (see below), whose sum is σ = 246657024. Its totient is φ = 168588000.

The previous prime is 206161061. The next prime is 206161069. The reversal of 206161067 is 760161602.

It is not a de Polignac number, because 206161067 - 24 = 206161051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206161061) 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, 8717 + ... + 22097.

It is an arithmetic number, because the mean of its divisors is an integer number (15416064).

Almost surely, 2206161067 is an apocalyptic number.

206161067 is a deficient number, since it is larger than the sum of its proper divisors (40495957).

206161067 is a wasteful number, since it uses less digits than its factorization.

206161067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13490.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 206161067 is about 14358.3100328695. The cubic root of 206161067 is about 590.7479425564.

The spelling of 206161067 in words is "two hundred six million, one hundred sixty-one thousand, sixty-seven".

Divisors: 1 7 31 71 217 497 2201 13381 15407 93667 414811 950051 2903677 6650357 29451581 206161067