Base | Representation |
---|---|
bin | 110001111011… |
… | …001110100000 |
3 | 220121220212201 |
4 | 301323032200 |
5 | 11322301043 |
6 | 1144302544 |
7 | 216146260 |
oct | 61731640 |
9 | 26556781 |
10 | 13087648 |
11 | 7429a42 |
12 | 4471a54 |
13 | 2933092 |
14 | 1a497a0 |
15 | 1237c4d |
hex | c7b3a0 |
13087648 has 24 divisors (see below), whose sum is σ = 29447712. Its totient is φ = 5608896.
The previous prime is 13087639. The next prime is 13087649. The reversal of 13087648 is 84678031.
It is a happy number.
13087648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not an unprimeable number, because it can be changed into a prime (13087649) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28990 + ... + 29437.
It is an arithmetic number, because the mean of its divisors is an integer number (1226988).
Almost surely, 213087648 is an apocalyptic number.
It is an amenable number.
13087648 is an abundant number, since it is smaller than the sum of its proper divisors (16360064).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13087648 is an equidigital number, since it uses as much as digits as its factorization.
13087648 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 58444 (or 58436 counting only the distinct ones).
The product of its (nonzero) digits is 32256, while the sum is 37.
The square root of 13087648 is about 3617.6854479073. The cubic root of 13087648 is about 235.6607209433.
It can be divided in two parts, 130 and 87648, that added together give a palindrome (87778).
The spelling of 13087648 in words is "thirteen million, eighty-seven thousand, six hundred forty-eight".
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