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27868540105 = 572707329411
BaseRepresentation
bin11001111101000110…
…000010110011001001
32122221012120112002001
4121331012002303021
5424033321240410
620445211311001
72004415453030
oct317506026311
978835515061
1027868540105
111090107872a
12549914b461
132821910923
1414c532d717
15ad194a33a
hex67d182cc9

27868540105 has 16 divisors (see below), whose sum is σ = 38222423424. Its totient is φ = 19108500480.

The previous prime is 27868540103. The next prime is 27868540121. The reversal of 27868540105 is 50104586872.

It is not a de Polignac number, because 27868540105 - 21 = 27868540103 is a prime.

It is a super-3 number, since 3×278685401053 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27868540103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932850 + ... + 962260.

It is an arithmetic number, because the mean of its divisors is an integer number (2388901464).

Almost surely, 227868540105 is an apocalyptic number.

It is an amenable number.

27868540105 is a deficient number, since it is larger than the sum of its proper divisors (10353883319).

27868540105 is a wasteful number, since it uses less digits than its factorization.

27868540105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56496.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 27868540105 in words is "twenty-seven billion, eight hundred sixty-eight million, five hundred forty thousand, one hundred five".

Divisors: 1 5 7 35 27073 29411 135365 147055 189511 205877 947555 1029385 796244003 3981220015 5573708021 27868540105