Base | Representation |
---|---|
bin | 101000111001100010… |
… | …1111100001101110001 |
3 | 22101201001011200002221 |
4 | 1101303011330031301 |
5 | 2414334023024441 |
6 | 104203151441041 |
7 | 6226342042240 |
oct | 1216305741561 |
9 | 271631150087 |
10 | 87830283121 |
11 | 342809a5749 |
12 | 15032226181 |
13 | 8389464739 |
14 | 4372aa4957 |
15 | 2440b428d1 |
hex | 147317c371 |
87830283121 has 16 divisors (see below), whose sum is σ = 100596291328. Its totient is φ = 75119140800.
The previous prime is 87830283071. The next prime is 87830283157. The reversal of 87830283121 is 12138203878.
It is a cyclic number.
It is not a de Polignac number, because 87830283121 - 27 = 87830282993 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (87830283161) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8050156 + ... + 8061058.
It is an arithmetic number, because the mean of its divisors is an integer number (6287268208).
Almost surely, 287830283121 is an apocalyptic number.
It is an amenable number.
87830283121 is a deficient number, since it is larger than the sum of its proper divisors (12766008207).
87830283121 is a wasteful number, since it uses less digits than its factorization.
87830283121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13312.
The product of its (nonzero) digits is 129024, while the sum is 43.
Adding to 87830283121 its reverse (12138203878), we get a palindrome (99968486999).
The spelling of 87830283121 in words is "eighty-seven billion, eight hundred thirty million, two hundred eighty-three thousand, one hundred twenty-one".
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