7128747972

Names of 7128747972

• Cardinal: 7128747972 can be written as Seven billion, one hundred twenty-eight million, seven hundred forty-seven thousand, nine hundred seventy-two.

Scientific notation

• Scientific notation: 7.128747972 × 10⁹

Factors of 7128747972

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 76

Divisors of 7128747972

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 9 12 17 18 23 31 34 36 46 51 62 68 69 92 93 102 124 138 153 186 204 207 276 279 289 306 372 391 414 527 558 578 612 713 782 828 867 961 1054 1116 1156 1173 1426 1564 1581 1734 1922 2108 2139 2346 2601 2852 2883 3162 3468 3519 3844 4278 4692 4743 5202 5766 6324 6417 6647 7038 8556 8649 8959 9486 10404 11532 12121 12834 13294 14076 16337 17298 17918 18972 19941 22103 24242 25668 26588 26877 29791 32674 34596 35836 36363 39882 44206 48484 49011 53754 59582 59823 65348 66309 72726 79764 80631 88412 89373 98022 107508 109089 119164 119646 132618 145452 147033 161262 178746 196044 198927 206057 218178 239292 265236 268119 277729 294066 322524 357492 375751 397854 412114 436356 506447 536238 555458 588132 618171 685193 751502 795708 824228 833187 1012894 1072476 1110916 1127253 1236342 1370386 1503004 1519341 1666374 1854513 2025788 2055579 2254506 2472684 2499561 2740772 3038682 3332748 3381759 3709026 4111158 4509012 4558023 4999122 6077364 6166737 6387767 6763518 7418052 8222316 8609599 9116046 9998244 11648281 12333474 12775534 13527036 17219198 18232092 19163301 23296562 24666948 25551068 25828797 34438396 34944843 38326602 46593124 51657594 57489903 69889686 76653204 77486391 103315188 104834529 114979806 139779372 154972782 198020777 209669058 229959612 309945564 396041554 419338116 594062331 792083108 1188124662 1782186993 2376249324 3564373986 7128747972
• Sum of all divisors σ(n): 20640302592
• Sum of proper divisors (its aliquot sum) s(n): 13511554620
• 7128747972 is an abundant number, because the sum of its proper divisors (13511554620) is greater than itself. Its abundance is 6382806648

Bases of 7128747972

• Binary: 110101000111010000000111111000100₂
• Hexadecimal: 0x1A8E80FC4
• Base-36: 39W9T50

Squares and roots of 7128747972

• 7128747972 squared (7128747972²) is 50819047648294112784
• 7128747972 cubed (7128747972³) is 362276182861748025768479274048
• The square root of 7128747972 is 84431.9132319053
• The cube root of 7128747972 is 1924.5879117449

Scales and comparisons

• 7,128,747,972 seconds is equal to 226 years, 34 weeks, 6 days, 15 hours, 46 minutes, 12 seconds.
• To count from 1 to 7,128,747,972 would take you about four hundred fifty-three 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 7128747972 cubic inches would be around 160.4 feet tall.

Recreational maths with 7128747972

• 7128747972 backwards is 2797478217
• The number of decimal digits it has is: 10
• The sum of 7128747972's digits is 54
• More coming soon!