7987798021428

Names of 7987798021428

• Cardinal: 7987798021428 can be written as Seven trillion, nine hundred eighty-seven billion, seven hundred ninety-eight million, twenty-one thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 7.987798021428 × 10¹²

Factors of 7987798021428

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 744

Divisors of 7987798021428

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 54 61 81 108 122 157 162 183 243 244 314 324 366 471 486 521 549 628 729 732 942 972 1042 1098 1413 1458 1563 1647 1884 2084 2187 2196 2826 2916 3126 3294 3721 4239 4374 4689 4941 5652 6252 6561 6588 7442 8478 8748 9378 9577 9882 11163 12717 13122 14067 14823 14884 16956 18756 19154 19764 22326 25434 26244 28134 28731 29646 31781 33489 38151 38308 42201 44469 44652 50868 56268 57462 59292 63562 66978 76302 81797 84402 86193 88938 95343 100467 114453 114924 126603 127124 133407 133956 152604 163594 168804 172386 177876 190686 200934 228906 245391 253206 258579 266814 286029 301401 327188 343359 344772 379809 381372 400221 401868 457812 490782 506412 517158 533628 572058 584197 602802 686718 736173 759618 775737 800442 858087 904203 981564 1030077 1034316 1139427 1144116 1168394 1205604 1373436 1472346 1519236 1551474 1600884 1716174 1752591 1808406 1938641 2060154 2208519 2278854 2327211 2336788 2574261 2712609 2944692 3102948 3418281 3432348 3505182 3616812 3877282 4120308 4417038 4557708 4654422 4989617 5148522 5257773 5425218 5815923 6625557 6836562 6981633 7010364 7722783 7754564 8137827 8834076 9308844 9979234 10297044 10515546 10850436 11631846 13251114 13673124 13963266 14968851 15445566 15773319 16275654 17447769 19876671 19958468 20944899 21031092 23168349 23263692 24413481 26502228 27926532 29937702 30891132 31546638 32551308 34895538 39753342 41889798 44906553 46336698 47319957 48826962 52343307 59630013 59875404 62834697 63093276 69505047 69791076 79506684 83779596 89813106 92673396 94639914 97653924 104686614 119260026 125669394 134719659 139010094 141959871 157029921 178890039 179626212 189279828 208515141 209373228 238520052 251338788 269439318 278020188 283919742 304366637 314059842 357780078 404158977 417030282 425879613 471089763 536670117 538878636 567839484 608733274 628119684 715560156 808317954 834060564 851759226 913099911 942179526 1073340234 1212476931 1217466548 1277638839 1413269289 1616635908 1703518452 1826199822 1884359052 2146680468 2424953862 2555277678 2739299733 2826538578 3637430793 3652399644 3832916517 4239807867 4849907724 5110555356 5478599466 5653077156 7274861586 7665833034 8217899199 8479615734 10912292379 10957198932 12719423601 14549723172 15331666068 16435798398 16959231468 21824584758 24653697597 25438847202 32736877137 32871596796 43649169516 49307395194 50877694404 65473754274 73961092791 98614790388 130947508548 147922185582 221883278373 295844371164 443766556746 665649835119 887533113492 1331299670238 1996949505357 2662599340476 3993899010714 7987798021428
• Sum of all divisors σ(n): 21493206093996
• Sum of proper divisors (its aliquot sum) s(n): 13505408072568
• 7987798021428 is an abundant number, because the sum of its proper divisors (13505408072568) is greater than itself. Its abundance is 5517610051140

Bases of 7987798021428

• Binary: 1110100001111001101110111010001010100110100₂
• Hexadecimal: 0x743CDDD1534
• Base-36: 2TXJKPB90

Squares and roots of 7987798021428

• 7987798021428 squared (7987798021428²) is 63804917231129071547159184
• 7987798021428 cubed (7987798021428³) is 509660791616190101874888780749358994752
• The square root of 7987798021428 is 2826269.2761709737
• The cube root of 7987798021428 is 19989.8265104063

Scales and comparisons

• 7,987,798,021,428 seconds is equal to 253,987 years, 13 weeks, 6 days, 23 hours, 43 minutes, 48 seconds.
• To count from 1 to 7,987,798,021,428 would take you about six hundred thirty-four thousand, nine hundred sixty-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 7987798021428 cubic inches would be around 1665.8 feet tall.

Recreational maths with 7987798021428

• 7987798021428 backwards is 8241208977897
• The number of decimal digits it has is: 13
• The sum of 7987798021428's digits is 72
• More coming soon!