401478987
401,478,987 is an odd composite number composed of seven prime numbers multiplied together.
401478987 is an odd composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 401478987:
3 × 7 × 13 × 17 × 19 × 29 × 157
See below for interesting mathematical facts about the number 401478987 from the Numbermatics database.
Names of 401478987
- Cardinal: 401478987 can be written as Four hundred one million, four hundred seventy-eight thousand, nine hundred eighty-seven.
Scientific notation
- Scientific notation: 4.01478987 × 108
Factors of 401478987
Divisors of 401478987
- Number of divisors d(n): 128
-
Complete list of divisors:
1 3 7 13 17 19 21 29 39 51 57 87 91 119 133 157 203 221 247 273 323 357 377 399 471 493 551 609 663 741 969 1099 1131 1479 1547 1653 1729 2041 2261 2639 2669 2983 3297 3451 3857 4199 4553 4641 5187 6123 6409 6783 7163 7917 8007 8949 9367 10353 11571 12597 13659 14287 18683 19227 20881 21489 28101 29393 31871 34697 38779 42861 44863 50141 50711 56049 59189 62643 65569 77401 86507 88179 95613 104091 116337 121771 134589 150423 152133 177567 196707 232203 242879 259521 271453 354977 365313 414323 541807 605549 659243 728637 814359 852397 1006213 1064931 1124591 1242969 1470619 1625421 1816647 1977729 2557191 3018639 3373773 4411857 4614701 7043491 7872137 10294333 13844103 19118047 21130473 23616411 30882999 57354141 133826329 401478987
- Sum of all divisors σ(n): 764467200
- Sum of proper divisors (its aliquot sum) s(n): 362988213
- 401478987 is a deficient number, because the sum of its proper divisors (362988213) is less than itself. Its deficiency is 38490774
Bases of 401478987
- Binary: 101111110111000010101010010112
- Hexadecimal: 0x17EE154B
- Base-36: 6N1363
Squares and roots of 401478987
- 401478987 squared (4014789872) is 161185377002546169
- 401478987 cubed (4014789873) is 64712541878195332350850803
-
The
square root of 401478987 is 20036.9405598759 -
The
cube root of 401478987 is 737.7132885733
Scales and comparisons
How big is 401478987?- 401,478,987 seconds is equal to 12 years, 39 weeks, 5 days, 17 hours, 56 minutes, 27 seconds.
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To count from 1 to 401,478,987 would take you about nineteen 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 401478987 cubic inches would be around 61.5 feet tall.
Recreational maths with 401478987
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