Base | Representation |
---|---|
bin | 110011101111111… |
… | …010001010110111 |
3 | 2020111122222110012 |
4 | 303233322022313 |
5 | 3234224301142 |
6 | 222052250435 |
7 | 30341360504 |
oct | 6357721267 |
9 | 2214588405 |
10 | 868197047 |
11 | 406090323 |
12 | 202910a1b |
13 | 10ab3cb83 |
14 | 8343c4ab |
15 | 51348882 |
hex | 33bfa2b7 |
868197047 has 12 divisors (see below), whose sum is σ = 898834200. Its totient is φ = 838149312.
The previous prime is 868197023. The next prime is 868197049. The reversal of 868197047 is 740791868.
It is not a de Polignac number, because 868197047 - 222 = 864002743 is a prime.
It is a super-2 number, since 2×8681970472 = 1507532224839040418, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 868196986 and 868197004.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (868197049) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339329 + ... + 341877.
It is an arithmetic number, because the mean of its divisors is an integer number (74902850).
Almost surely, 2868197047 is an apocalyptic number.
868197047 is a deficient number, since it is larger than the sum of its proper divisors (30637153).
868197047 is an equidigital number, since it uses as much as digits as its factorization.
868197047 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2770 (or 2681 counting only the distinct ones).
The product of its (nonzero) digits is 677376, while the sum is 50.
The square root of 868197047 is about 29465.1836410364. The cubic root of 868197047 is about 953.9803621723.
The spelling of 868197047 in words is "eight hundred sixty-eight million, one hundred ninety-seven thousand, forty-seven".
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