Base | Representation |
---|---|
bin | 1010011111011… |
… | …00011001000101 |
3 | 20010120212101211 |
4 | 11033230121011 |
5 | 140012000234 |
6 | 12422051421 |
7 | 2115662653 |
oct | 517543105 |
9 | 203525354 |
10 | 88000069 |
11 | 45745833 |
12 | 25579b71 |
13 | 15301861 |
14 | b989dd3 |
15 | 7ad4164 |
hex | 53ec645 |
88000069 has 2 divisors, whose sum is σ = 88000070. Its totient is φ = 88000068.
The previous prime is 88000067. The next prime is 88000091. The reversal of 88000069 is 96000088.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 68973025 + 19027044 = 8305^2 + 4362^2 .
It is a cyclic number.
It is not a de Polignac number, because 88000069 - 21 = 88000067 is a prime.
It is a super-2 number, since 2×880000692 = 15488024288009522, which contains 22 as substring.
Together with 88000067, it forms a pair of twin primes.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 88000069.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (88000061) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44000034 + 44000035.
It is an arithmetic number, because the mean of its divisors is an integer number (44000035).
Almost surely, 288000069 is an apocalyptic number.
It is an amenable number.
88000069 is a deficient number, since it is larger than the sum of its proper divisors (1).
88000069 is an equidigital number, since it uses as much as digits as its factorization.
88000069 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3456, while the sum is 31.
The square root of 88000069 is about 9380.8351973585. The cubic root of 88000069 is about 444.7961343673.
The spelling of 88000069 in words is "eighty-eight million, sixty-nine", and thus it is an aban number and an uban number.
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