Base | Representation |
---|---|
bin | 1000000111111… |
… | …10101011101111 |
3 | 11202020111000220 |
4 | 10003332223233 |
5 | 114421331142 |
6 | 10432422423 |
7 | 1455166005 |
oct | 403765357 |
9 | 152214026 |
10 | 68152047 |
11 | 35519707 |
12 | 1a9a7a13 |
13 | 11172672 |
14 | 90a0a75 |
15 | 5eb32ec |
hex | 40feaef |
68152047 has 16 divisors (see below), whose sum is σ = 92510208. Its totient is φ = 44621120.
The previous prime is 68152037. The next prime is 68152057. The reversal of 68152047 is 74025186.
It is an interprime number because it is at equal distance from previous prime (68152037) and next prime (68152057).
It is a cyclic number.
It is not a de Polignac number, because 68152047 - 28 = 68151791 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 68151999 and 68152017.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68152027) 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 15 ways as a sum of consecutive naturals, for example, 46843 + ... + 48275.
It is an arithmetic number, because the mean of its divisors is an integer number (5781888).
Almost surely, 268152047 is an apocalyptic number.
68152047 is a deficient number, since it is larger than the sum of its proper divisors (24358161).
68152047 is a wasteful number, since it uses less digits than its factorization.
68152047 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1710.
The product of its (nonzero) digits is 13440, while the sum is 33.
The square root of 68152047 is about 8255.4253070329. The cubic root of 68152047 is about 408.4695010906.
The spelling of 68152047 in words is "sixty-eight million, one hundred fifty-two thousand, forty-seven".
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