157215849720

Names of 157215849720

• Cardinal: 157215849720 can be written as One hundred fifty-seven billion, two hundred fifteen million, eight hundred forty-nine thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.5721584972 × 10¹¹

Factors of 157215849720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 110637

Divisors of 157215849720

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 17 20 24 30 34 40 41 51 60 68 82 85 102 120 123 136 164 170 204 205 246 255 289 328 340 408 410 492 510 578 615 680 697 820 867 984 1020 1156 1230 1394 1445 1640 1734 2040 2091 2312 2460 2788 2890 3468 3485 4182 4335 4920 5576 5780 6936 6970 8364 8670 10455 11560 11849 13940 16728 17340 20910 23698 27880 34680 35547 41820 47396 59245 71094 83640 94792 110569 118490 142188 177735 221138 236980 284376 331707 355470 442276 473960 552845 663414 710940 884552 1105690 1326828 1421880 1658535 1879673 2211380 2653656 3317070 3759346 4422760 4533329 5639019 6634140 7518692 9066658 9398365 11278038 13268280 13599987 15037384 18133316 18796730 22556076 22666645 27199974 28195095 31954441 36266632 37593460 45112152 45333290 54399948 56390190 63908882 67999935 75186920 77066593 90666580 95863323 108799896 112780380 127817764 135999870 154133186 159772205 181333160 191726646 225560760 231199779 255635528 271999740 308266372 319544410 383453292 385332965 462399558 479316615 543999480 616532744 639088820 766906584 770665930 924799116 958633230 1155998895 1278177640 1310132081 1541331860 1849598232 1917266460 2311997790 2620264162 3082663720 3834532920 3930396243 4623995580 5240528324 6550660405 7860792486 9247991160 10481056648 13101320810 15721584972 19651981215 26202641620 31443169944 39303962430 52405283240 78607924860 157215849720
• Sum of all divisors σ(n): 513248248800
• Sum of proper divisors (its aliquot sum) s(n): 356032399080
• 157215849720 is an abundant number, because the sum of its proper divisors (356032399080) is greater than itself. Its abundance is 198816549360

Bases of 157215849720

• Binary: 10010010011010110010110111110011111000₂
• Hexadecimal: 0x249ACB7CF8
• Base-36: 20829A0O

Squares and roots of 157215849720

• 157215849720 squared (157215849720²) is 24716823403181624078400
• 157215849720 cubed (157215849720³) is 3885876393710381180975267898048000
• The square root of 157215849720 is 396504.5393434985
• The cube root of 157215849720 is 5397.1618570069

Scales and comparisons

• 157,215,849,720 seconds is equal to 4,998 years, 50 weeks, 5 days, 21 hours, 22 minutes.
• To count from 1 to 157,215,849,720 would take you about nine thousand, nine hundred ninety-seven 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 157215849720 cubic inches would be around 449.8 feet tall.

Recreational maths with 157215849720

• 157215849720 backwards is 027948512751
• 157215849720 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 157215849720's digits is 51
• More coming soon!