Number 78

A page of the Numeropedia - the Special Encyclopedia of Numbers

  [70-79]:  70 - 71  - 72 - 73 - 7475 - 76 - 77 - 78 - 79

All Numbers  &  [0-9]  & 10-19  20-29  30-39  40-49  50-59  60-69  70-79  80-89  90-99  100

1  - 10 - 100  - 1000 - 10,000 - 100,000 - 1M - 10M - 100M1B10B - 100B - 1T - 10T - 100T - 1Q - ...

[Chemistry]  The atomic number of Platinum (Pt).

 

[Math.]  A triangular number (sum of all integers from 1 to 12):

78 = 1+2+3+4+5+6+7+8+9+10+11+12.

 

[Math.]  782 = 6084  = (–006+084)2

783 = 474552  = (–474+552)3

784 = 37,015,056  = (037–015+056)4

786 = 225,199,600,704  (–225+199–600+704)6

787 = 17,565,568,854,912  (017–565+568–854+912)7

788 = 1,370,114,370,683,136 = (–001+370–114+370–683+136)8

7810 = 8,335,775,831,236,199,424 = (008–335+775–831+236–199+424)10

7811 = 650,190,514,836,423,555,072 = (650–190+514–836+423–555+072)11

7812 = 50,714,860,157,241,037,295,616 = (–050+714–860+157–241+037–295+616)12

7813 = 3,955,759,092,264,800,909,058,048 =

= (003–955+759–092+264–800+909–058+048)13.

Also:

785 = 2,887,174,368 and –002+887–174+368 = 1079, where –001+079 = 78.

 789  = 106,868,920,913,284,608 and –106+868–920+913–284+608 = 1079.

 7814 = 308,549,209,196,654,470,906,527,744 

                          and 308–549+209–196+654–470+906–527+744 = 1079.

 

[Math.]  A sequence of palindromic numbers: 77, 77×78 = 6,006 and 77×78×79 = 474,474. 

 

[Math.]  Rule of 78 (sum of the digits of 12 months of a year) is a formula to determine on interest for installment loans. The lender earns 12/78th of total interest in the first month, 11/78th in the 2nd month and so on…

 

[Science] 

American system

British system

Number

*****

tredecillion

1078

tredecillion

septillion

1042

septillion

quadrillion

1024

quadrillion

*****

1015