Base | Representation |
---|---|
bin | 10010101100001001… |
… | …110110000000001100 |
3 | 1220210120201200011202 |
4 | 102230021312000030 |
5 | 312044420141303 |
6 | 13115201405032 |
7 | 1310210204024 |
oct | 225411660014 |
9 | 56716650152 |
10 | 20068130828 |
11 | 8568a33799 |
12 | 3a80939778 |
13 | 1b7a840735 |
14 | d8537ca84 |
15 | 7c6c27c88 |
hex | 4ac27600c |
20068130828 has 48 divisors (see below), whose sum is σ = 39501554400. Its totient is φ = 8864640000.
The previous prime is 20068130827. The next prime is 20068130833. The reversal of 20068130828 is 82803186002.
It is a super-3 number, since 3×200681308283 (a number of 32 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (38).
It is a junction number, because it is equal to n+sod(n) for n = 20068130791 and 20068130800.
It is not an unprimeable number, because it can be changed into a prime (20068130827) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69578 + ... + 212078.
It is an arithmetic number, because the mean of its divisors is an integer number (822949050).
Almost surely, 220068130828 is an apocalyptic number.
It is an amenable number.
20068130828 is a deficient number, since it is larger than the sum of its proper divisors (19433423572).
20068130828 is a wasteful number, since it uses less digits than its factorization.
20068130828 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 142650 (or 142648 counting only the distinct ones).
The product of its (nonzero) digits is 36864, while the sum is 38.
The spelling of 20068130828 in words is "twenty billion, sixty-eight million, one hundred thirty thousand, eight hundred twenty-eight".
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