Base | Representation |
---|---|
bin | 10010101100010101… |
… | …100110010101011110 |
3 | 1220210210112020021101 |
4 | 102230111212111132 |
5 | 312101212244012 |
6 | 13115351423314 |
7 | 1310245330114 |
oct | 225425462536 |
9 | 56723466241 |
10 | 20071212382 |
11 | 856a748a31 |
12 | 3a81984b3a |
13 | 1b7b37c240 |
14 | d85941ab4 |
15 | 7c7135d57 |
hex | 4ac56655e |
20071212382 has 8 divisors (see below), whose sum is σ = 32422727736. Its totient is φ = 9263636472.
The previous prime is 20071212377. The next prime is 20071212389. The reversal of 20071212382 is 28321217002.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a super-2 number, since 2×200712123822 (a number of 21 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 20071212382.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20071212389) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385984828 + ... + 385984879.
It is an arithmetic number, because the mean of its divisors is an integer number (4052840967).
Almost surely, 220071212382 is an apocalyptic number.
20071212382 is a deficient number, since it is larger than the sum of its proper divisors (12351515354).
20071212382 is a wasteful number, since it uses less digits than its factorization.
20071212382 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 771969722.
The product of its (nonzero) digits is 2688, while the sum is 28.
Adding to 20071212382 its reverse (28321217002), we get a palindrome (48392429384).
The spelling of 20071212382 in words is "twenty billion, seventy-one million, two hundred twelve thousand, three hundred eighty-two".
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