6991438208

Names of 6991438208

• Cardinal: 6991438208 can be written as Six billion, nine hundred ninety-one million, four hundred thirty-eight thousand, two hundred eight.

Scientific notation

• Scientific notation: 6.991438208 × 10⁹

Factors of 6991438208

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 596

Divisors of 6991438208

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 8 16 19 32 38 64 67 76 107 128 134 152 214 268 304 401 428 536 608 802 856 1072 1216 1273 1604 1712 2033 2144 2432 2546 3208 3424 4066 4288 5092 6416 6848 7169 7619 8132 8576 10184 12832 13696 14338 15238 16264 20368 25664 26867 28676 30476 32528 40736 42907 51328 53734 57352 60952 65056 81472 85814 107468 114704 121904 130112 136211 162944 171628 214936 229408 243808 260224 272422 343256 429872 458816 487616 510473 544844 686512 815233 859744 917632 975232 1020946 1089688 1373024 1630466 1719488 2041892 2179376 2746048 2874769 3260932 3438976 4083784 4358752 5492096 5749538 6521864 8167568 8717504 11499076 13043728 16335136 17435008 22998152 26087456 32670272 45996304 52174912 54620611 65340544 91992608 104349824 109241222 183985216 218482444 367970432 436964888 873929776 1747859552 3495719104 6991438208
• Sum of all divisors σ(n): 15056668800
• Sum of proper divisors (its aliquot sum) s(n): 8065230592
• 6991438208 is an abundant number, because the sum of its proper divisors (8065230592) is greater than itself. Its abundance is 1073792384

Bases of 6991438208

• Binary: 110100000101110001110000110000000₂
• Hexadecimal: 0x1A0B8E180
• Base-36: 37MIS8W

Squares and roots of 6991438208

• 6991438208 squared (6991438208²) is 48880208216282251264
• 6991438208 cubed (6991438208³) is 341742955338311259199385894912
• The square root of 6991438208 is 83614.8205045013
• The cube root of 6991438208 is 1912.1509541595

Scales and comparisons

• 6,991,438,208 seconds is equal to 222 years, 15 weeks, 6 days, 10 hours, 10 minutes, 8 seconds.
• To count from 1 to 6,991,438,208 would take you about four hundred forty-four 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 6991438208 cubic inches would be around 159.3 feet tall.

Recreational maths with 6991438208

• 6991438208 backwards is 8028341996
• The number of decimal digits it has is: 10
• The sum of 6991438208's digits is 50
• More coming soon!