2128400640

Names of 2128400640

• Cardinal: 2128400640 can be written as Two billion, one hundred twenty-eight million, four hundred thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.12840064 × 10⁹

Factors of 2128400640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 3988

Divisors of 2128400640

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 47 48 60 64 72 80 90 94 96 120 128 141 144 160 180 188 192 235 240 256 282 288 320 360 376 384 423 470 480 564 576 640 705 720 752 768 846 940 960 1128 1152 1280 1410 1440 1504 1692 1880 1920 2115 2256 2304 2820 2880 3008 3384 3760 3840 3931 4230 4512 5640 5760 6016 6768 7520 7862 8460 9024 11280 11520 11793 12032 13536 15040 15724 16920 18048 19655 22560 23586 27072 30080 31448 33840 35379 36096 39310 45120 47172 54144 58965 60160 62896 67680 70758 78620 90240 94344 108288 117930 125792 135360 141516 157240 176895 180480 184757 188688 235860 251584 270720 283032 314480 353790 369514 377376 471720 503168 541440 554271 566064 628960 707580 739028 754752 923785 943440 1006336 1108542 1132128 1257920 1415160 1478056 1509504 1662813 1847570 1886880 2217084 2264256 2515840 2771355 2830320 2956112 3019008 3325626 3695140 3773760 4434168 4528512 5031680 5542710 5660640 5912224 6651252 7390280 7547520 8314065 8868336 9057024 11085420 11321280 11824448 13302504 14780560 15095040 16628130 17736672 22170840 22642560 23648896 26605008 29561120 33256260 35473344 44341680 45285120 47297792 53210016 59122240 66512520 70946688 88683360 106420032 118244480 133025040 141893376 177366720 212840064 236488960 266050080 354733440 425680128 532100160 709466880 1064200320 2128400640
• Sum of all divisors σ(n): 7522639488
• Sum of proper divisors (its aliquot sum) s(n): 5394238848
• 2128400640 is an abundant number, because the sum of its proper divisors (5394238848) is greater than itself. Its abundance is 3265838208

Bases of 2128400640

• Binary: 1111110110111001101000100000000₂
• Hexadecimal: 0x7EDCD100
• Base-36: Z770G0

Squares and roots of 2128400640

• 2128400640 squared (2128400640²) is 4530089284352409600
• 2128400640 cubed (2128400640³) is 9641844932072810578182144000
• The square root of 2128400640 is 46134.5926610391
• The cube root of 2128400640 is 1286.3262339821

Scales and comparisons

• 2,128,400,640 seconds is equal to 67 years, 35 weeks, 1 day, 6 hours, 24 minutes.
• To count from 1 to 2,128,400,640 would take you about one hundred thirty-five 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 2128400640 cubic inches would be around 107.2 feet tall.

Recreational maths with 2128400640

• 2128400640 backwards is 0460048212
• The number of decimal digits it has is: 10
• The sum of 2128400640's digits is 27
• More coming soon!