Base | Representation |
---|---|
bin | 1111100000000… |
… | …00000101101011 |
3 | 100001122220002211 |
4 | 13300000011223 |
5 | 231241230122 |
6 | 20522505551 |
7 | 3136120045 |
oct | 760000553 |
9 | 301586084 |
10 | 130023787 |
11 | 67438883 |
12 | 376652b7 |
13 | 20c2656a |
14 | 133a8a95 |
15 | b635877 |
hex | 7c0016b |
130023787 has 16 divisors (see below), whose sum is σ = 137998080. Its totient is φ = 122365152.
The previous prime is 130023767. The next prime is 130023799. The reversal of 130023787 is 787320031.
It is a cyclic number.
It is not a de Polignac number, because 130023787 - 27 = 130023659 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130023727) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133978 + ... + 134944.
It is an arithmetic number, because the mean of its divisors is an integer number (8624880).
Almost surely, 2130023787 is an apocalyptic number.
130023787 is a deficient number, since it is larger than the sum of its proper divisors (7974293).
130023787 is an equidigital number, since it uses as much as digits as its factorization.
130023787 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1122.
The product of its (nonzero) digits is 7056, while the sum is 31.
The square root of 130023787 is about 11402.7973322339. The cubic root of 130023787 is about 506.6105974908.
The spelling of 130023787 in words is "one hundred thirty million, twenty-three thousand, seven hundred eighty-seven".
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