Base | Representation |
---|---|
bin | 10011000010100110… |
… | …000000011100100001 |
3 | 1221202211010220210010 |
4 | 103002212000130201 |
5 | 313332310044020 |
6 | 13220410555133 |
7 | 1322431223631 |
oct | 230246003441 |
9 | 57684126703 |
10 | 20444612385 |
11 | 87414a597a |
12 | 3b66a38aa9 |
13 | 1c0a8392a2 |
14 | dbd3806c1 |
15 | 7e9ce2de0 |
hex | 4c2980721 |
20444612385 has 8 divisors (see below), whose sum is σ = 32711379840. Its totient is φ = 10903793264.
The previous prime is 20444612381. The next prime is 20444612401. The reversal of 20444612385 is 58321644402.
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 20444612385 - 22 = 20444612381 is a prime.
It is not an unprimeable number, because it can be changed into a prime (20444612381) 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, 681487065 + ... + 681487094.
It is an arithmetic number, because the mean of its divisors is an integer number (4088922480).
Almost surely, 220444612385 is an apocalyptic number.
It is an amenable number.
20444612385 is a deficient number, since it is larger than the sum of its proper divisors (12266767455).
20444612385 is a wasteful number, since it uses less digits than its factorization.
20444612385 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1362974167.
The product of its (nonzero) digits is 184320, while the sum is 39.
The spelling of 20444612385 in words is "twenty billion, four hundred forty-four million, six hundred twelve thousand, three hundred eighty-five".
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