Base | Representation |
---|---|
bin | 1000001001000… |
… | …01010101001001 |
3 | 11202111200200222 |
4 | 10010201111021 |
5 | 114440401321 |
6 | 10435435425 |
7 | 1456326521 |
oct | 404412511 |
9 | 152450628 |
10 | 68293961 |
11 | 3560629a |
12 | 1aa55b75 |
13 | 111c2138 |
14 | 90da681 |
15 | 5ee03ab |
hex | 4121549 |
68293961 has 16 divisors (see below), whose sum is σ = 75816960. Its totient is φ = 61255440.
The previous prime is 68293949. The next prime is 68293963. The reversal of 68293961 is 16939286.
It is a cyclic number.
It is not a de Polignac number, because 68293961 - 210 = 68292937 is a prime.
It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (68293963) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26450 + ... + 28916.
It is an arithmetic number, because the mean of its divisors is an integer number (4738560).
Almost surely, 268293961 is an apocalyptic number.
It is an amenable number.
68293961 is a deficient number, since it is larger than the sum of its proper divisors (7522999).
68293961 is a wasteful number, since it uses less digits than its factorization.
68293961 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2564.
The product of its digits is 139968, while the sum is 44.
The square root of 68293961 is about 8264.0160333823. The cubic root of 68293961 is about 408.7528251885.
The spelling of 68293961 in words is "sixty-eight million, two hundred ninety-three thousand, nine hundred sixty-one".
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