Base | Representation |
---|---|
bin | 101100011101… |
… | …1100111001101 |
3 | 1121212102012201 |
4 | 1120323213031 |
5 | 21432002340 |
6 | 2151401501 |
7 | 402104323 |
oct | 130734715 |
9 | 47772181 |
10 | 23312845 |
11 | 12183316 |
12 | 7983291 |
13 | 4aa32aa |
14 | 314bd13 |
15 | 20a779a |
hex | 163b9cd |
23312845 has 8 divisors (see below), whose sum is σ = 28503576. Its totient is φ = 18298176.
The previous prime is 23312843. The next prime is 23312857. The reversal of 23312845 is 54821332.
It can be written as a sum of positive squares in 4 ways, for example, as 826281 + 22486564 = 909^2 + 4742^2 .
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 23312845 - 21 = 23312843 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23312843) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43722 + ... + 44251.
It is an arithmetic number, because the mean of its divisors is an integer number (3562947).
Almost surely, 223312845 is an apocalyptic number.
It is an amenable number.
23312845 is a deficient number, since it is larger than the sum of its proper divisors (5190731).
23312845 is an equidigital number, since it uses as much as digits as its factorization.
23312845 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 88031.
The product of its digits is 5760, while the sum is 28.
The square root of 23312845 is about 4828.3377056706. The cubic root of 23312845 is about 285.6703007885.
The spelling of 23312845 in words is "twenty-three million, three hundred twelve thousand, eight hundred forty-five".
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