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204281061 = 31711335447
BaseRepresentation
bin11000010110100…
…01010011100101
3112020101112221020
430023101103211
5404243443221
632134241353
75030234415
oct1413212345
9466345836
10204281061
11a5347426
12584b6259
1333425a8a
141d1b8645
1512e02ac6
hexc2d14e5

204281061 has 16 divisors (see below), whose sum is σ = 290957184. Its totient is φ = 127038464.

The previous prime is 204281039. The next prime is 204281087. The reversal of 204281061 is 160182402.

It is a cyclic number.

It is not a de Polignac number, because 204281061 - 214 = 204264677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204211061) 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, 11961 + ... + 23486.

It is an arithmetic number, because the mean of its divisors is an integer number (18184824).

Almost surely, 2204281061 is an apocalyptic number.

It is an amenable number.

204281061 is a deficient number, since it is larger than the sum of its proper divisors (86676123).

204281061 is a wasteful number, since it uses less digits than its factorization.

204281061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35580.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 204281061 is about 14292.6925734796. The cubic root of 204281061 is about 588.9467573224.

The spelling of 204281061 in words is "two hundred four million, two hundred eighty-one thousand, sixty-one".

Divisors: 1 3 17 51 113 339 1921 5763 35447 106341 602599 1807797 4005511 12016533 68093687 204281061