Base | Representation |
---|---|
bin | 1111011111010… |
… | …00100111100011 |
3 | 100001111000020020 |
4 | 13233220213203 |
5 | 231230141101 |
6 | 20520444523 |
7 | 3135236550 |
oct | 757504743 |
9 | 301430206 |
10 | 129927651 |
11 | 67382627 |
12 | 37619743 |
13 | 20bc1889 |
14 | 13381a27 |
15 | b617136 |
hex | 7be89e3 |
129927651 has 32 divisors (see below), whose sum is σ = 210428928. Its totient is φ = 69611520.
The previous prime is 129927613. The next prime is 129927653. The reversal of 129927651 is 156729921.
It is not a de Polignac number, because 129927651 - 29 = 129927139 is a prime.
It is not an unprimeable number, because it can be changed into a prime (129927653) 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, 125506 + ... + 126536.
It is an arithmetic number, because the mean of its divisors is an integer number (6575904).
Almost surely, 2129927651 is an apocalyptic number.
129927651 is a deficient number, since it is larger than the sum of its proper divisors (80501277).
129927651 is a wasteful number, since it uses less digits than its factorization.
129927651 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1411.
The product of its digits is 68040, while the sum is 42.
The square root of 129927651 is about 11398.5810959084. The cubic root of 129927651 is about 506.4857087408.
The spelling of 129927651 in words is "one hundred twenty-nine million, nine hundred twenty-seven thousand, six hundred fifty-one".
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