21989949440

Names of 21989949440

• Cardinal: 21989949440 can be written as Twenty-one billion, nine hundred eighty-nine million, nine hundred forty-nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.198994944 × 10¹⁰

Factors of 21989949440

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 909

Divisors of 21989949440

• Number of divisors d(n): 152
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 32 38 40 64 76 80 95 128 152 160 190 256 304 320 380 512 608 640 760 883 1024 1216 1280 1520 1766 2048 2432 2560 3040 3532 4096 4415 4864 5120 6080 7064 8192 8830 9728 10240 12160 14128 16384 16777 17660 19456 20480 24320 28256 32768 33554 35320 38912 40960 48640 56512 65536 67108 70640 77824 81920 83885 97280 113024 131072 134216 141280 155648 163840 167770 194560 226048 262144 268432 282560 311296 327680 335540 389120 452096 536864 565120 622592 655360 671080 778240 904192 1073728 1130240 1245184 1310720 1342160 1556480 1808384 2147456 2260480 2490368 2684320 3112960 3616768 4294912 4520960 4980736 5368640 6225920 7233536 8589824 9041920 10737280 12451840 14467072 17179648 18083840 21474560 24903680 28934144 34359296 36167680 42949120 57868288 68718592 72335360 85898240 115736576 137437184 144670720 171796480 231473152 274874368 289341440 343592960 549748736 578682880 687185920 1099497472 1157365760 1374371840 2198994944 2748743680 4397989888 5497487360 10994974720 21989949440
• Sum of all divisors σ(n): 55616364960
• Sum of proper divisors (its aliquot sum) s(n): 33626415520
• 21989949440 is an abundant number, because the sum of its proper divisors (33626415520) is greater than itself. Its abundance is 11636466080

Bases of 21989949440

• Binary: 10100011110101101000000000000000000₂
• Hexadecimal: 0x51EB40000
• Base-36: A3O8XKW

Squares and roots of 21989949440

• 21989949440 squared (21989949440²) is 483557876373756313600
• 21989949440 cubed (21989949440³) is 10633413252772671878944784384000
• The square root of 21989949440 is 148290.0854406659
• The cube root of 21989949440 is 2801.6125677151

Scales and comparisons

• 21,989,949,440 seconds is equal to 699 years, 11 weeks, 7 hours, 17 minutes, 20 seconds.
• To count from 1 to 21,989,949,440 would take you about one thousand, three hundred ninety-eight 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 21989949440 cubic inches would be around 233.5 feet tall.

Recreational maths with 21989949440

• 21989949440 backwards is 04494998912
• The number of decimal digits it has is: 11
• The sum of 21989949440's digits is 59
• More coming soon!