28120121946

Names of 28120121946

• Cardinal: 28120121946 can be written as Twenty-eight billion, one hundred twenty million, one hundred twenty-one thousand, nine hundred forty-six.

Scientific notation

• Scientific notation: 2.8120121946 × 10¹⁰

Factors of 28120121946

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3267

Divisors of 28120121946

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 42 54 63 107 126 189 214 239 321 378 478 642 717 749 963 1434 1498 1673 1926 2151 2247 2889 2909 3346 4302 4494 5019 5778 5818 6453 6741 8727 10038 12906 13482 15057 17454 20223 20363 25573 26181 30114 40446 40726 45171 51146 52362 61089 76719 78543 90342 122178 153438 157086 179011 183267 230157 311263 358022 366534 460314 537033 549801 622526 690471 695251 933789 1074066 1099602 1380942 1390502 1611099 1867578 2085753 2178841 2801367 3222198 4171506 4357682 4833297 4866757 5602734 6257259 6536523 8404101 9666594 9733514 12514518 13073046 14600271 16808202 18771777 19609569 29200542 37543554 39219138 43800813 58828707 74391857 87601626 117657414 131402439 148783714 223175571 262804878 446351142 520742999 669526713 1041485998 1339053426 1562228997 2008580139 3124457994 4017160278 4686686991 9373373982 14060060973 28120121946
• Sum of all divisors σ(n): 72410112000
• Sum of proper divisors (its aliquot sum) s(n): 44289990054
• 28120121946 is an abundant number, because the sum of its proper divisors (44289990054) is greater than itself. Its abundance is 16169868108

Bases of 28120121946

• Binary: 11010001100000101110000001001011010₂
• Hexadecimal: 0x68C17025A
• Base-36: CX1ZSYI

Squares and roots of 28120121946

• 28120121946 squared (28120121946²) is 790741258257910826916
• 28120121946 cubed (28120121946³) is 22235740609945931972071619098536
• The square root of 28120121946 is 167690.5541346917
• The cube root of 28120121946 is 3040.9251694889

Scales and comparisons

• 28,120,121,946 seconds is equal to 894 years, 6 weeks, 6 days, 8 hours, 59 minutes, 6 seconds.
• To count from 1 to 28,120,121,946 would take you about one thousand, seven hundred eighty-eight years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 28120121946 cubic inches would be around 253.4 feet tall.

Recreational maths with 28120121946

• 28120121946 backwards is 64912102182
• The number of decimal digits it has is: 11
• The sum of 28120121946's digits is 36
• More coming soon!