Base | Representation |
---|---|
bin | 101100000100… |
… | …1110010011001 |
3 | 1121111001021001 |
4 | 1120021302121 |
5 | 21403440021 |
6 | 2143145001 |
7 | 400264324 |
oct | 130116231 |
9 | 47431231 |
10 | 23108761 |
11 | 12053a55 |
12 | 78a5161 |
13 | 4a31430 |
14 | 30d77bb |
15 | 2067091 |
hex | 1609c99 |
23108761 has 8 divisors (see below), whose sum is σ = 25167240. Its totient is φ = 21090432.
The previous prime is 23108753. The next prime is 23108773. The reversal of 23108761 is 16780132.
It can be written as a sum of positive squares in 4 ways, for example, as 20736 + 23088025 = 144^2 + 4805^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 23108761 - 23 = 23108753 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (23108711) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8830 + ... + 11143.
It is an arithmetic number, because the mean of its divisors is an integer number (3145905).
Almost surely, 223108761 is an apocalyptic number.
It is an amenable number.
23108761 is a deficient number, since it is larger than the sum of its proper divisors (2058479).
23108761 is a wasteful number, since it uses less digits than its factorization.
23108761 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20075.
The product of its (nonzero) digits is 2016, while the sum is 28.
The square root of 23108761 is about 4807.1572680743. The cubic root of 23108761 is about 284.8342567641.
Adding to 23108761 its reverse (16780132), we get a palindrome (39888893).
The spelling of 23108761 in words is "twenty-three million, one hundred eight thousand, seven hundred sixty-one".
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