155138940
155,138,940 is an even composite number composed of six prime numbers multiplied together.
155138940 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 155138940:
22 × 32 × 5 × 112 × 17 × 419
(2 × 2 × 3 × 3 × 5 × 11 × 11 × 17 × 419)See below for interesting mathematical facts about the number 155138940 from the Numbermatics database.
Names of 155138940
- Cardinal: 155138940 can be written as One hundred fifty-five million, one hundred thirty-eight thousand, nine hundred forty.
Scientific notation
- Scientific notation: 1.5513894 × 108
Factors of 155138940
Divisors of 155138940
- Number of divisors d(n): 216
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Complete list of divisors:
1 2 3 4 5 6 9 10 11 12 15 17 18 20 22 30 33 34 36 44 45 51 55 60 66 68 85 90 99 102 110 121 132 153 165 170 180 187 198 204 220 242 255 306 330 340 363 374 396 419 484 495 510 561 605 612 660 726 748 765 838 935 990 1020 1089 1122 1210 1257 1452 1530 1676 1683 1815 1870 1980 2057 2095 2178 2244 2420 2514 2805 3060 3366 3630 3740 3771 4114 4190 4356 4609 5028 5445 5610 6171 6285 6732 7123 7260 7542 8228 8380 8415 9218 10285 10890 11220 12342 12570 13827 14246 15084 16830 18436 18513 18855 20570 21369 21780 23045 24684 25140 27654 28492 30855 33660 35615 37026 37710 41140 41481 42738 46090 50699 55308 61710 64107 69135 71230 74052 75420 78353 82962 85476 92180 92565 101398 106845 123420 128214 138270 142460 152097 156706 165924 185130 202796 207405 213690 235059 253495 256428 276540 304194 313412 320535 370260 391765 414810 427380 456291 470118 506990 608388 641070 705177 760485 783530 829620 861883 912582 940236 1013980 1175295 1282140 1410354 1520970 1567060 1723766 1825164 2281455 2350590 2585649 2820708 3041940 3447532 3525885 4309415 4562910 4701180 5171298 7051770 7756947 8618830 9125820 10342596 12928245 14103540 15513894 17237660 25856490 31027788 38784735 51712980 77569470 155138940
- Sum of all divisors σ(n): 548992080
- Sum of proper divisors (its aliquot sum) s(n): 393853140
- 155138940 is an abundant number, because the sum of its proper divisors (393853140) is greater than itself. Its abundance is 238714200
Bases of 155138940
- Binary: 10010011111100111011011111002
- Hexadecimal: 0x93F3B7C
- Base-36: 2KD5Z0
Squares and roots of 155138940
- 155138940 squared (1551389402) is 24068090704323600
- 155138940 cubed (1551389403) is 3733898079692616720984000
-
The
square root of 155138940 is 12455.4783127747 -
The
cube root of 155138940 is 537.3289912087
Scales and comparisons
How big is 155138940?- 155,138,940 seconds is equal to 4 years, 48 weeks, 3 days, 14 hours, 9 minutes.
-
To count from 1 to 155,138,940 would take you about 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 155138940 cubic inches would be around 44.8 feet tall.
Recreational maths with 155138940
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