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13905827 = 132107769
BaseRepresentation
bin110101000010…
…111110100011
3222011111012122
4311002332203
512024441302
61214014455
7226124525
oct65027643
928144178
1013905827
117938721
1247a742b
132b5b600
141bbda15
15134a3a2
hexd42fa3

13905827 has 12 divisors (see below), whose sum is σ = 15218280. Its totient is φ = 12699648.

The previous prime is 13905811. The next prime is 13905833. The reversal of 13905827 is 72850931.

It is not a de Polignac number, because 13905827 - 24 = 13905811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13905427) 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 11 ways as a sum of consecutive naturals, for example, 17699 + ... + 18467.

It is an arithmetic number, because the mean of its divisors is an integer number (1268190).

Almost surely, 213905827 is an apocalyptic number.

13905827 is a deficient number, since it is larger than the sum of its proper divisors (1312453).

13905827 is a wasteful number, since it uses less digits than its factorization.

13905827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 13905827 is about 3729.0517561439. The cubic root of 13905827 is about 240.4726046224.

The spelling of 13905827 in words is "thirteen million, nine hundred five thousand, eight hundred twenty-seven".

Divisors: 1 13 107 169 769 1391 9997 18083 82283 129961 1069679 13905827