1998729216

Names of 1998729216

• Cardinal: 1998729216 can be written as One billion, nine hundred ninety-eight million, seven hundred twenty-nine thousand, two hundred sixteen.

Scientific notation

• Scientific notation: 1.998729216 × 10⁹

Factors of 1998729216

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 100

Divisors of 1998729216

• Number of divisors d(n): 416
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 27 31 32 33 36 44 48 53 54 62 64 66 72 88 93 96 99 106 108 124 128 132 144 159 176 186 192 198 212 216 248 256 264 279 288 297 318 341 352 372 384 396 424 432 477 496 512 528 558 576 583 594 636 682 704 744 768 792 837 848 864 954 992 1023 1024 1056 1116 1152 1166 1188 1272 1364 1408 1431 1488 1536 1584 1643 1674 1696 1728 1749 1908 1984 2046 2048 2112 2232 2304 2332 2376 2544 2728 2816 2862 2976 3069 3072 3168 3286 3348 3392 3456 3498 3816 3968 4092 4096 4224 4464 4608 4664 4752 4929 5088 5247 5456 5632 5724 5952 6138 6144 6336 6572 6696 6784 6912 6996 7632 7936 8184 8448 8928 9207 9216 9328 9504 9858 10176 10494 10912 11264 11448 11904 12276 12288 12672 13144 13392 13568 13824 13992 14787 15264 15741 15872 16368 16896 17856 18073 18414 18432 18656 19008 19716 20352 20988 21824 22528 22896 23808 24552 25344 26288 26784 27136 27648 27984 29574 30528 31482 31744 32736 33792 35712 36146 36828 36864 37312 38016 39432 40704 41976 43648 44361 45056 45792 47616 49104 50688 52576 53568 54219 54272 55296 55968 59148 61056 62964 63488 65472 67584 71424 72292 73656 74624 76032 78864 81408 83952 87296 88722 91584 95232 98208 101376 105152 107136 108438 108544 110592 111936 118296 122112 125928 126976 130944 135168 142848 144584 147312 149248 152064 157728 162657 162816 167904 174592 177444 183168 190464 196416 202752 210304 214272 216876 217088 223872 236592 244224 251856 261888 285696 289168 294624 298496 304128 315456 325314 325632 335808 349184 354888 366336 380928 392832 405504 420608 428544 433752 447744 473184 487971 488448 503712 523776 571392 578336 589248 596992 608256 630912 650628 651264 671616 698368 709776 732672 785664 841216 857088 867504 895488 946368 975942 976896 1007424 1047552 1142784 1156672 1178496 1193984 1216512 1261824 1301256 1343232 1396736 1419552 1465344 1571328 1682432 1714176 1735008 1790976 1892736 1951884 1953792 2014848 2095104 2313344 2356992 2387968 2523648 2602512 2686464 2839104 2930688 3142656 3364864 3428352 3470016 3581952 3785472 3903768 4029696 4190208 4626688 4713984 5047296 5205024 5372928 5678208 5861376 6285312 6729728 6940032 7163904 7570944 7807536 8059392 9253376 9427968 10094592 10410048 10745856 11356416 12570624 13880064 15141888 15615072 16118784 18506752 18855936 20189184 20820096 21491712 22712832 27760128 30283776 31230144 32237568 37013504 37711872 41640192 45425664 55520256 60567552 62460288 64475136 74027008 83280384 90851328 111040512 124920576 166560768 181702656 222081024 249841152 333121536 499682304 666243072 999364608 1998729216
• Sum of all divisors σ(n): 6793943040
• Sum of proper divisors (its aliquot sum) s(n): 4795213824
• 1998729216 is an abundant number, because the sum of its proper divisors (4795213824) is greater than itself. Its abundance is 2796484608

Bases of 1998729216

• Binary: 1110111001000100011000000000000₂
• Hexadecimal: 0x77223000
• Base-36: X1ZPC0

Squares and roots of 1998729216

• 1998729216 squared (1998729216²) is 3994918478891974656
• 1998729216 cubed (1998729216³) is 7984760279299669052878749696
• The square root of 1998729216 is 44707.1494953547
• The cube root of 1998729216 is 1259.6541454387

Scales and comparisons

• 1,998,729,216 seconds is equal to 63 years, 28 weeks, 5 days, 10 hours, 33 minutes, 36 seconds.
• To count from 1 to 1,998,729,216 would take you about one hundred twenty-seven 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 1998729216 cubic inches would be around 105 feet tall.

Recreational maths with 1998729216

• 1998729216 backwards is 6129278991
• 1998729216 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1998729216's digits is 54
• More coming soon!