Base | Representation |
---|---|
bin | 1000010101110100… |
… | …0011111101001001 |
3 | 12210001001101021101 |
4 | 2011131003331021 |
5 | 14041140104410 |
6 | 1010101141401 |
7 | 106325041054 |
oct | 20535037511 |
9 | 5701041241 |
10 | 2238988105 |
11 | a499399a2 |
12 | 5259ba861 |
13 | 298b32743 |
14 | 173509a9b |
15 | d186dd3a |
hex | 85743f49 |
2238988105 has 4 divisors (see below), whose sum is σ = 2686785732. Its totient is φ = 1791190480.
The previous prime is 2238988097. The next prime is 2238988159. The reversal of 2238988105 is 5018898322.
2238988105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5018898322 = 2 ⋅2509449161.
It can be written as a sum of positive squares in 2 ways, for example, as 1504198656 + 734789449 = 38784^2 + 27107^2 .
It is not a de Polignac number, because 2238988105 - 23 = 2238988097 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223898806 + ... + 223898815.
It is an arithmetic number, because the mean of its divisors is an integer number (671696433).
Almost surely, 22238988105 is an apocalyptic number.
It is an amenable number.
2238988105 is a deficient number, since it is larger than the sum of its proper divisors (447797627).
2238988105 is an equidigital number, since it uses as much as digits as its factorization.
2238988105 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 447797626.
The product of its (nonzero) digits is 276480, while the sum is 46.
The square root of 2238988105 is about 47317.9469651844. The cubic root of 2238988105 is about 1308.2294720407.
The spelling of 2238988105 in words is "two billion, two hundred thirty-eight million, nine hundred eighty-eight thousand, one hundred five".
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