Base | Representation |
---|---|
bin | 10000011111100… |
… | …11101011110011 |
3 | 100122100111102020 |
4 | 20033303223303 |
5 | 240410032322 |
6 | 21421322523 |
7 | 3300024360 |
oct | 1017635363 |
9 | 318314366 |
10 | 138361587 |
11 | 71113121 |
12 | 3a406443 |
13 | 22885680 |
14 | 14539467 |
15 | c23105c |
hex | 83f3af3 |
138361587 has 32 divisors (see below), whose sum is σ = 234393600. Its totient is φ = 70623360.
The previous prime is 138361579. The next prime is 138361621. The reversal of 138361587 is 785163831.
It is not a de Polignac number, because 138361587 - 23 = 138361579 is a prime.
It is not an unprimeable number, because it can be changed into a prime (138361567) 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 31 ways as a sum of consecutive naturals, for example, 289 + ... + 16637.
It is an arithmetic number, because the mean of its divisors is an integer number (7324800).
Almost surely, 2138361587 is an apocalyptic number.
138361587 is a deficient number, since it is larger than the sum of its proper divisors (96032013).
138361587 is a wasteful number, since it uses less digits than its factorization.
138361587 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16403.
The product of its digits is 120960, while the sum is 42.
The square root of 138361587 is about 11762.7202211053. The cubic root of 138361587 is about 517.2158733447.
The spelling of 138361587 in words is "one hundred thirty-eight million, three hundred sixty-one thousand, five hundred eighty-seven".
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