199989720

Names of 199989720

• Cardinal: 199989720 can be written as One hundred ninety-nine million, nine hundred eighty-nine thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.9998972 × 10⁸

Factors of 199989720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1379

Divisors of 199989720

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 28 30 35 36 40 42 45 56 60 61 63 70 72 84 90 105 120 122 126 140 168 180 183 210 244 252 280 305 315 360 366 420 427 488 504 549 610 630 732 840 854 915 1098 1220 1260 1281 1301 1464 1708 1830 2135 2196 2440 2520 2562 2602 2745 3416 3660 3843 3903 4270 4392 5124 5204 5490 6405 6505 7320 7686 7806 8540 9107 10248 10408 10980 11709 12810 13010 15372 15612 17080 18214 19215 19515 21960 23418 25620 26020 27321 30744 31224 36428 38430 39030 45535 46836 51240 52040 54642 58545 72856 76860 78060 79361 81963 91070 93672 109284 117090 136605 153720 156120 158722 163926 182140 218568 234180 238083 273210 317444 327852 364280 396805 409815 468360 476166 546420 555527 634888 655704 714249 793610 819630 952332 1092840 1111054 1190415 1428498 1587220 1639260 1666581 1904664 2222108 2380830 2777635 2856996 3174440 3278520 3333162 3571245 4444216 4761660 4999743 5555270 5713992 6666324 7142490 8332905 9523320 9999486 11110540 13332648 14284980 16665810 19998972 22221080 24998715 28569960 33331620 39997944 49997430 66663240 99994860 199989720
• Sum of all divisors σ(n): 755576640
• Sum of proper divisors (its aliquot sum) s(n): 555586920
• 199989720 is an abundant number, because the sum of its proper divisors (555586920) is greater than itself. Its abundance is 355597200

Bases of 199989720

• Binary: 1011111010111001100111011000₂
• Hexadecimal: 0xBEB99D8
• Base-36: 3B2H20

Squares and roots of 199989720

• 199989720 squared (199989720²) is 39995888105678400
• 199989720 cubed (199989720³) is 7998766463405953626048000
• The square root of 199989720 is 14141.7721661749
• The cube root of 199989720 is 584.7935278367

Scales and comparisons

• 199,989,720 seconds is equal to 6 years, 18 weeks, 4 days, 16 hours, 42 minutes.
• To count from 1 to 199,989,720 would take you about nine 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 199989720 cubic inches would be around 48.7 feet tall.

Recreational maths with 199989720

• 199989720 backwards is 027989991
• The number of decimal digits it has is: 9
• The sum of 199989720's digits is 54
• More coming soon!