Base | Representation |
---|---|
bin | 110001111011… |
… | …010001110000 |
3 | 220121221011102 |
4 | 301323101300 |
5 | 11322302411 |
6 | 1144303532 |
7 | 216150005 |
oct | 61732160 |
9 | 26557142 |
10 | 13087856 |
11 | 742a111 |
12 | 4471ba8 |
13 | 29331c2 |
14 | 1a498ac |
15 | 1237d3b |
hex | c7b470 |
13087856 has 40 divisors (see below), whose sum is σ = 26435808. Its totient is φ = 6272000.
The previous prime is 13087819. The next prime is 13087861. The reversal of 13087856 is 65878031.
13087856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46436 + ... + 46716.
Almost surely, 213087856 is an apocalyptic number.
13087856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.
It is an amenable number.
13087856 is an abundant number, since it is smaller than the sum of its proper divisors (13347952).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13087856 is a wasteful number, since it uses less digits than its factorization.
13087856 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 401 (or 395 counting only the distinct ones).
The product of its (nonzero) digits is 40320, while the sum is 38.
The square root of 13087856 is about 3617.7141954555. The cubic root of 13087856 is about 235.6619693767.
The spelling of 13087856 in words is "thirteen million, eighty-seven thousand, eight hundred fifty-six".
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