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13805193 = 3431031039
BaseRepresentation
bin110100101010…
…011010001001
3221222101011110
4310222122021
512013231233
61211520533
7225225243
oct64523211
927871143
1013805193
11787a056
124759149
132b2486c
141b95093
15132a663
hexd2a689

13805193 has 16 divisors (see below), whose sum is σ = 19036160. Its totient is φ = 8893584.

The previous prime is 13805179. The next prime is 13805201. The reversal of 13805193 is 39150831.

It is a happy number.

It is not a de Polignac number, because 13805193 - 25 = 13805161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13805193.

It is not an unprimeable number, because it can be changed into a prime (13805293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12768 + ... + 13806.

It is an arithmetic number, because the mean of its divisors is an integer number (1189760).

Almost surely, 213805193 is an apocalyptic number.

It is an amenable number.

13805193 is a deficient number, since it is larger than the sum of its proper divisors (5230967).

13805193 is a wasteful number, since it uses less digits than its factorization.

13805193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 13805193 is about 3715.5340127632. The cubic root of 13805193 is about 239.8911138011.

The spelling of 13805193 in words is "thirteen million, eight hundred five thousand, one hundred ninety-three".

Divisors: 1 3 43 103 129 309 1039 3117 4429 13287 44677 107017 134031 321051 4601731 13805193