428690388
428,690,388 is an even composite number composed of six prime numbers multiplied together.
428690388 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 428690388:
22 × 3 × 7 × 192 × 67 × 211
(2 × 2 × 3 × 7 × 19 × 19 × 67 × 211)See below for interesting mathematical facts about the number 428690388 from the Numbermatics database.
Names of 428690388
- Cardinal: 428690388 can be written as Four hundred twenty-eight million, six hundred ninety thousand, three hundred eighty-eight.
Scientific notation
- Scientific notation: 4.28690388 × 108
Factors of 428690388
Divisors of 428690388
- Number of divisors d(n): 144
-
Complete list of divisors:
1 2 3 4 6 7 12 14 19 21 28 38 42 57 67 76 84 114 133 134 201 211 228 266 268 361 399 402 422 469 532 633 722 798 804 844 938 1083 1266 1273 1407 1444 1477 1596 1876 2166 2527 2532 2546 2814 2954 3819 4009 4332 4431 5054 5092 5628 5908 7581 7638 8018 8862 8911 10108 12027 14137 15162 15276 16036 17724 17822 24054 24187 26733 28063 28274 30324 35644 42411 48108 48374 53466 56126 56548 72561 76171 84189 84822 96748 98959 106932 112252 145122 152342 168378 169309 169644 197918 228513 268603 290244 296877 304684 336756 338618 395836 457026 507927 533197 537206 593754 677236 805809 914052 1015854 1066394 1074412 1187508 1599591 1611618 1880221 2031708 2132788 3199182 3223236 3760442 5103457 5640663 6398364 7520884 10206914 11281326 15310371 20413828 22562652 30620742 35724199 61241484 71448398 107172597 142896796 214345194 428690388
- Sum of all divisors σ(n): 1230319104
- Sum of proper divisors (its aliquot sum) s(n): 801628716
- 428690388 is an abundant number, because the sum of its proper divisors (801628716) is greater than itself. Its abundance is 372938328
Bases of 428690388
- Binary: 110011000110101001011110101002
- Hexadecimal: 0x198D4BD4
- Base-36: 738BMC
Squares and roots of 428690388
- 428690388 squared (4286903882) is 183775448763590544
- 428690388 cubed (4286903883) is 78782768435337750580491072
-
The
square root of 428690388 is 20704.8397240839 -
The
cube root of 428690388 is 754.0171929089
Scales and comparisons
How big is 428690388?- 428,690,388 seconds is equal to 13 years, 32 weeks, 5 days, 16 hours, 39 minutes, 48 seconds.
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To count from 1 to 428,690,388 would take you about twenty 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 428690388 cubic inches would be around 62.8 feet tall.
Recreational maths with 428690388
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