Base | Representation |
---|---|
bin | 1001000011111… |
… | …0110001101101 |
3 | 2122111220020210 |
4 | 2100332301231 |
5 | 34212141434 |
6 | 3434333033 |
7 | 641021166 |
oct | 220766155 |
9 | 78456223 |
10 | 38005869 |
11 | 1a4a9410 |
12 | 1088a179 |
13 | 7b48ca5 |
14 | 509476d |
15 | 350aee9 |
hex | 243ec6d |
38005869 has 16 divisors (see below), whose sum is σ = 55457280. Its totient is φ = 22960560.
The previous prime is 38005859. The next prime is 38005879. The reversal of 38005869 is 96850083.
It is an interprime number because it is at equal distance from previous prime (38005859) and next prime (38005879).
It is not a de Polignac number, because 38005869 - 28 = 38005613 is a prime.
It is a super-2 number, since 2×380058692 = 2888892156890322, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (38005819) 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, 9792 + ... + 13110.
It is an arithmetic number, because the mean of its divisors is an integer number (3466080).
Almost surely, 238005869 is an apocalyptic number.
It is an amenable number.
38005869 is a deficient number, since it is larger than the sum of its proper divisors (17451411).
38005869 is a wasteful number, since it uses less digits than its factorization.
38005869 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3680.
The product of its (nonzero) digits is 51840, while the sum is 39.
The square root of 38005869 is about 6164.8900233500. The cubic root of 38005869 is about 336.2148480640.
It can be divided in two parts, 3800 and 5869, that added together give a palindrome (9669).
The spelling of 38005869 in words is "thirty-eight million, five thousand, eight hundred sixty-nine".
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