155440209920

Names of 155440209920

• Cardinal: 155440209920 can be written as One hundred fifty-five billion, four hundred forty million, two hundred nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.5544020992 × 10¹¹

Factors of 155440209920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 453

Divisors of 155440209920

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 8 10 16 17 19 20 31 32 34 38 40 62 64 68 76 80 85 95 124 128 136 152 155 160 170 190 248 256 272 304 310 320 323 340 379 380 496 512 527 544 589 608 620 640 646 680 758 760 992 1024 1054 1088 1178 1216 1240 1280 1292 1360 1516 1520 1615 1895 1984 2048 2108 2176 2356 2432 2480 2560 2584 2635 2720 2945 3032 3040 3230 3790 3968 4096 4216 4352 4712 4864 4960 5120 5168 5270 5440 5890 6064 6080 6443 6460 7201 7580 7936 8192 8432 8704 9424 9728 9920 10013 10240 10336 10540 10880 11749 11780 12128 12160 12886 12920 14402 15160 15872 16864 17408 18848 19456 19840 20026 20480 20672 21080 21760 23498 23560 24256 24320 25772 25840 28804 30320 31744 32215 33728 34816 36005 37696 38912 39680 40052 40960 41344 42160 43520 46996 47120 48512 48640 50065 51544 51680 57608 58745 60640 63488 64430 67456 69632 72010 75392 77824 79360 80104 82688 84320 87040 93992 94240 97024 97280 100130 103088 103360 115216 117490 121280 122417 126976 128860 134912 139264 144020 150784 155648 158720 160208 165376 168640 174080 187984 188480 194048 194560 199733 200260 206176 206720 223231 230432 234980 242560 244834 253952 257720 269824 288040 301568 317440 320416 330752 337280 348160 375968 376960 388096 389120 399466 400520 412352 413440 446462 460864 469960 485120 489668 515440 539648 576080 603136 612085 634880 640832 661504 674560 696320 751936 753920 776192 778240 798932 801040 824704 826880 892924 921728 939920 970240 979336 998665 1030880 1079296 1116155 1152160 1206272 1224170 1269760 1281664 1323008 1349120 1503872 1507840 1552384 1597864 1602080 1649408 1653760 1785848 1843456 1879840 1940480 1958672 1997330 2061760 2158592 2232310 2304320 2412544 2448340 2563328 2646016 2698240 3007744 3015680 3104768 3195728 3204160 3298816 3307520 3571696 3686912 3759680 3794927 3880960 3917344 3994660 4123520 4317184 4464620 4608640 4825088 4896680 5126656 5396480 6015488 6031360 6391456 6408320 6597632 6615040 7143392 7373824 7519360 7589854 7761920 7834688 7989320 8247040 8929240 9217280 9793360 10253312 10792960 12030976 12062720 12782912 12816640 13195264 13230080 14286784 14747648 15038720 15179708 15523840 15669376 15978640 16494080 17858480 18434560 18974635 19586720 20506624 21585920 24061952 24125440 25565824 25633280 26390528 28573568 29495296 30077440 30359416 31338752 31957280 32988160 35716960 36869120 37949270 39173440 41013248 48123904 51131648 51266560 52781056 57147136 58990592 60154880 60718832 62677504 63914560 65976320 71433920 73738240 75898540 78346880 82026496 96247808 102263296 102533120 114294272 120309760 121437664 125355008 127829120 131952640 142867840 147476480 151797080 156693760 204526592 205066240 228588544 240619520 242875328 250710016 255658240 263905280 285735680 294952960 303594160 313387520 409053184 410132480 457177088 481239040 485750656 501420032 511316480 571471360 607188320 626775040 818106368 914354176 971501312 1002840064 1022632960 1142942720 1214376640 1253550080 1636212736 1828708352 1943002624 2045265920 2285885440 2428753280 2507100160 3886005248 4090531840 4571770880 4857506560 5014200320 7772010496 8181063680 9143541760 9715013120 15544020992 19430026240 31088041984 38860052480 77720104960 155440209920
• Sum of all divisors σ(n): 430309324800
• Sum of proper divisors (its aliquot sum) s(n): 274869114880
• 155440209920 is an abundant number, because the sum of its proper divisors (274869114880) is greater than itself. Its abundance is 119428904960

Bases of 155440209920

• Binary: 10010000110000111101010110000000000000₂
• Hexadecimal: 0x2430F56000
• Base-36: 1ZEP35KW

Squares and roots of 155440209920

• 155440209920 squared (155440209920²) is 24161658859973666406400
• 155440209920 cubed (155440209920³) is 3755693325209734591882868031488000
• The square root of 155440209920 is 394259.0644741095
• The cube root of 155440209920 is 5376.7658583897

Scales and comparisons

• 155,440,209,920 seconds is equal to 4,942 years, 26 weeks, 6 days, 12 hours, 5 minutes, 20 seconds.
• To count from 1 to 155,440,209,920 would take you about nine thousand, eight hundred eighty-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 155440209920 cubic inches would be around 448.1 feet tall.

Recreational maths with 155440209920

• 155440209920 backwards is 029902044551
• The number of decimal digits it has is: 12
• The sum of 155440209920's digits is 41
• More coming soon!