11991121920

Names of 11991121920

• Cardinal: 11991121920 can be written as Eleven billion, nine hundred ninety-one million, one hundred twenty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.199112192 × 10¹⁰

Factors of 11991121920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 136

Divisors of 11991121920

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 19 20 24 30 32 36 38 40 45 48 57 60 64 72 76 80 90 95 96 107 114 120 128 144 152 160 171 180 190 192 214 228 240 256 285 288 304 320 321 342 360 380 384 428 456 480 512 535 570 576 608 640 642 684 720 760 768 855 856 912 960 963 1024 1070 1140 1152 1216 1280 1284 1368 1440 1520 1536 1605 1710 1712 1824 1920 1926 2033 2048 2140 2280 2304 2432 2560 2568 2736 2880 3040 3072 3210 3420 3424 3648 3840 3852 4066 4096 4280 4560 4608 4815 4864 5120 5136 5472 5760 6080 6099 6144 6420 6840 6848 7296 7680 7704 8132 8192 8560 9120 9216 9630 9728 10165 10240 10272 10944 11520 12160 12198 12288 12840 13680 13696 14592 15360 15408 16264 16384 17120 18240 18297 18432 19260 19456 20330 20480 20544 21888 23040 24320 24396 24576 25680 27360 27392 29184 30495 30720 30816 32528 32768 34240 36480 36594 36864 38520 38912 40660 40960 41088 43776 46080 48640 48792 49152 51360 54720 54784 58368 60990 61440 61632 65056 65536 68480 72960 73188 73728 77040 77824 81320 81920 82176 87552 91485 92160 97280 97584 98304 102720 109440 109568 116736 121980 122880 123264 130112 131072 136960 145920 146376 147456 154080 155648 162640 163840 164352 175104 182970 184320 194560 195168 196608 205440 218880 219136 233472 243960 245760 246528 260224 273920 291840 292752 294912 308160 311296 325280 327680 328704 350208 365940 368640 389120 390336 393216 410880 437760 438272 466944 487920 491520 493056 520448 547840 583680 585504 589824 616320 622592 650560 655360 657408 700416 731880 737280 778240 780672 821760 875520 876544 933888 975840 983040 986112 1040896 1095680 1167360 1171008 1179648 1232640 1245184 1301120 1314816 1400832 1463760 1474560 1556480 1561344 1643520 1751040 1753088 1867776 1951680 1966080 1972224 2081792 2191360 2334720 2342016 2465280 2490368 2602240 2629632 2801664 2927520 2949120 3112960 3122688 3287040 3502080 3506176 3735552 3903360 3944448 4163584 4382720 4669440 4684032 4930560 5204480 5259264 5603328 5855040 5898240 6225920 6245376 6574080 7004160 7012352 7471104 7806720 7888896 8327168 8765440 9338880 9368064 9861120 10408960 10518528 11206656 11710080 12451840 12490752 13148160 14008320 14024704 15613440 15777792 16654336 17530880 18677760 18736128 19722240 20817920 21037056 22413312 23420160 24981504 26296320 28016640 31226880 31555584 33308672 35061760 37355520 37472256 39444480 41635840 42074112 46840320 49963008 52592640 56033280 62453760 63111168 66617344 70123520 74944512 78888960 83271680 93680640 99926016 105185280 112066560 124907520 126222336 133234688 149889024 157777920 166543360 187361280 199852032 210370560 249815040 266469376 299778048 315555840 333086720 374722560 399704064 499630080 599556096 631111680 666173440 749445120 799408128 999260160 1199112192 1332346880 1498890240 1998520320 2398224384 2997780480 3997040640 5995560960 11991121920
• Sum of all divisors σ(n): 44165852640
• Sum of proper divisors (its aliquot sum) s(n): 32174730720
• 11991121920 is an abundant number, because the sum of its proper divisors (32174730720) is greater than itself. Its abundance is 20183608800

Bases of 11991121920

• Binary: 1011001010101110100000000000000000₂
• Hexadecimal: 0x2CABA0000
• Base-36: 5IB7CW0

Squares and roots of 11991121920

• 11991121920 squared (11991121920²) is 143787004900304486400
• 11991121920 cubed (11991121920³) is 1724167506271188541545381888000
• The square root of 11991121920 is 109503.9812974853
• The cube root of 11991121920 is 2288.8637422205

Scales and comparisons

• 11,991,121,920 seconds is equal to 381 years, 14 weeks, 4 days, 3 hours, 12 minutes.
• To count from 1 to 11,991,121,920 would take you about seven hundred sixty-two 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 11991121920 cubic inches would be around 190.7 feet tall.

Recreational maths with 11991121920

• 11991121920 backwards is 02912119911
• 11991121920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 11991121920's digits is 36
• More coming soon!