Base | Representation |
---|---|
bin | 110011111110… |
… | …111011001001 |
3 | 221122022211201 |
4 | 303332323021 |
5 | 11442031311 |
6 | 1204024201 |
7 | 223554046 |
oct | 63767311 |
9 | 27568751 |
10 | 13627081 |
11 | 7768256 |
12 | 4692061 |
13 | 2a91780 |
14 | 1b4a1cd |
15 | 12e29c1 |
hex | cfeec9 |
13627081 has 16 divisors (see below), whose sum is σ = 15667344. Its totient is φ = 11741184.
The previous prime is 13627079. The next prime is 13627111. The reversal of 13627081 is 18072631.
It can be written as a sum of positive squares in 8 ways, for example, as 84681 + 13542400 = 291^2 + 3680^2 .
It is not a de Polignac number, because 13627081 - 21 = 13627079 is a prime.
It is a super-2 number, since 2×136270812 = 371394673161122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (13627051) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43381 + ... + 43693.
It is an arithmetic number, because the mean of its divisors is an integer number (979209).
Almost surely, 213627081 is an apocalyptic number.
It is an amenable number.
13627081 is a deficient number, since it is larger than the sum of its proper divisors (2040263).
13627081 is a wasteful number, since it uses less digits than its factorization.
13627081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 540.
The product of its (nonzero) digits is 2016, while the sum is 28.
The square root of 13627081 is about 3691.4876405048. The cubic root of 13627081 is about 238.8549682342.
The spelling of 13627081 in words is "thirteen million, six hundred twenty-seven thousand, eighty-one".
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