Base | Representation |
---|---|
bin | 11001000111110111… |
… | …11110111101000101 |
3 | 1021210222201200210000 |
4 | 30203323332331011 |
5 | 210110341010210 |
6 | 10110214551513 |
7 | 655145440023 |
oct | 144373767505 |
9 | 37728650700 |
10 | 13487828805 |
11 | 57a1589460 |
12 | 2745068599 |
13 | 136c484bb9 |
14 | 91d473713 |
15 | 53e1b3ac0 |
hex | 323efef45 |
13487828805 has 80 divisors (see below), whose sum is σ = 27285984000. Its totient is φ = 6313991040.
The previous prime is 13487828773. The next prime is 13487828819. The reversal of 13487828805 is 50882878431.
13487828805 is a `hidden beast` number, since 1 + 3 + 487 + 82 + 8 + 80 + 5 = 666.
It is not a de Polignac number, because 13487828805 - 25 = 13487828773 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 76996 + ... + 181394.
It is an arithmetic number, because the mean of its divisors is an integer number (341074800).
Almost surely, 213487828805 is an apocalyptic number.
13487828805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13487828805 is an abundant number, since it is smaller than the sum of its proper divisors (13798155195).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13487828805 is a wasteful number, since it uses less digits than its factorization.
13487828805 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 104456 (or 104447 counting only the distinct ones).
The product of its (nonzero) digits is 3440640, while the sum is 54.
The spelling of 13487828805 in words is "thirteen billion, four hundred eighty-seven million, eight hundred twenty-eight thousand, eight hundred five".
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