30728215728

Names of 30728215728

• Cardinal: 30728215728 can be written as Thirty billion, seven hundred twenty-eight million, two hundred fifteen thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 3.0728215728 × 10¹⁰

Factors of 30728215728

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 3871

Divisors of 30728215728

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 19 21 24 27 28 36 38 42 47 48 54 56 57 63 72 76 81 84 94 108 112 114 126 133 141 144 152 162 168 171 188 189 216 228 252 266 282 304 324 329 336 342 376 378 399 423 432 456 504 513 532 564 567 648 658 684 752 756 798 846 893 912 987 1008 1026 1064 1128 1134 1197 1269 1296 1316 1368 1512 1539 1596 1692 1786 1974 2052 2128 2256 2268 2394 2538 2632 2679 2736 2961 3024 3078 3192 3384 3572 3591 3793 3807 3948 4104 4536 4788 5076 5264 5358 5922 6156 6251 6384 6768 7144 7182 7586 7614 7896 8037 8208 8883 9072 9576 10152 10716 10773 11379 11844 12312 12502 14288 14364 15172 15228 15792 16074 17766 18753 19152 20304 21432 21546 22758 23688 24111 24624 25004 26551 26649 28728 30344 30456 32148 34137 35532 37506 42864 43092 45516 47376 48222 50008 53102 53298 56259 57456 60688 60912 64296 68274 71064 72067 72333 75012 79653 86184 91032 96444 100016 102411 106204 106596 112518 128592 136548 142128 144134 144666 150024 159306 168777 172368 178271 182064 192888 204822 212408 213192 216201 225036 238959 273096 288268 289332 300048 307233 318612 337554 356542 385776 409644 424816 426384 432402 450072 477918 504469 506331 534813 546192 576536 578664 614466 637224 648603 675108 713084 716877 819288 864804 900144 955836 1008938 1012662 1069626 1153072 1157328 1228932 1247897 1274448 1297206 1350216 1426168 1433754 1513407 1604439 1638576 1729608 1911672 1945809 2017876 2025324 2139252 2150631 2457864 2495794 2594412 2700432 2852336 2867508 3026814 3208878 3387149 3459216 3743691 3823344 3891618 4035752 4050648 4278504 4301262 4540221 4813317 4915728 4991588 5188824 5735016 5837427 6053628 6417756 6774298 7487382 7783236 8071504 8101296 8557008 8602524 9080442 9626634 9983176 10161447 10377648 11231073 11470032 11674854 12107256 12835512 13548596 13620663 14439951 14974764 15566472 17205048 18160884 19253268 19966352 20322894 22462146 23349708 23710043 24214512 25671024 27097192 27241326 28879902 29949528 30484341 31132944 33693219 34410096 36321768 38506536 40645788 40861989 44924292 46699416 47420086 54194384 54482652 57759804 59899056 60968682 67386438 71130129 72643536 77013072 81291576 81723978 89848584 91453023 93398832 94840172 101079657 108965304 115519608 121937364 134772876 142260258 162583152 163447956 179697168 182906046 189680344 202159314 213390387 217930608 231039216 243874728 269545752 274359069 284520516 326895912 365812092 379360688 404318628 426780774 487749456 539091504 548718138 569041032 640171161 653791824 731624184 808637256 853561548 1097436276 1138082064 1280342322 1463248368 1617274512 1707123096 1920513483 2194872552 2560684644 3414246192 3841026966 4389745104 5121369288 7682053932 10242738576 15364107864 30728215728
• Sum of all divisors σ(n): 109296337920
• Sum of proper divisors (its aliquot sum) s(n): 78568122192
• 30728215728 is an abundant number, because the sum of its proper divisors (78568122192) is greater than itself. Its abundance is 47839906464

Bases of 30728215728

• Binary: 11100100111100010110101110010110000₂
• Hexadecimal: 0x7278B5CB0
• Base-36: E46SB00

Squares and roots of 30728215728

• 30728215728 squared (30728215728²) is 944223241826506569984
• 30728215728 cubed (30728215728³) is 29014295470236406631077681508352
• The square root of 30728215728 is 175294.6540200243
• The cube root of 30728215728 is 3132.1732849913

Scales and comparisons

• 30,728,215,728 seconds is equal to 977 years, 3 weeks, 1 day, 15 hours, 28 minutes, 48 seconds.
• To count from 1 to 30,728,215,728 would take you about one thousand, nine hundred fifty-four 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 30728215728 cubic inches would be around 261 feet tall.

Recreational maths with 30728215728

• 30728215728 backwards is 82751282703
• The number of decimal digits it has is: 11
• The sum of 30728215728's digits is 45
• More coming soon!