642912689 is an odd 9-digits composite number following 642912688
and preceding 642912690 . In scientific notation, it is written as 6.42912689 × 10^8.
The sum of its digits is 47. It has a total of 3 prime factors and 8 positive divisors.
There are 618692400 positive integers (up to 642912689) that are relatively prime to 642912689.
642912689 has 8 divisors, whose sum is 667365120
The reverse of 642912689 is 986219246
Previous prime number is 179
Is Prime? no Number parity odd Number length 9 Sum of Digits 47 Digital Root 2
Name
six hundred forty-two million nine hundred twelve thousand six hundred eighty-nine
Scientific notation
6.42912689 × 10^8
Engineering notation
6.42912689 × 10^6
Prime Factorization
31 × 179 × 115861
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
642912689 Product of the distinct prime numbers
The prime factorization of 642912689 is 31 × 179 × 115861.
Since it has a total of 3 prime factors.
8 , 6 , 2 , 87 , 481 , 365 , 4167 , 3239 , 4177 , 35641 , 63439 , 562370 , 9528961 , 2031648 , 75231982 , 54368644 , 911671522 , 13144790 , 6879616601 , 1208063750
n×2
1285825378
n×3
1928738067
n×4
2571650756
n×5
3214563445
n÷2
321456344.5
n÷3
214304229.66667
n÷3
160728172.25
n÷5
128582537.8
n2
413336725677210721
n3
2.6573942576759E+26
n4
1.7084724879356E+35
n5
1.0983986413012E+44
2 √n25355.723002904
3 √n863.07923071764
4 √n159.23480462168
5 √n57.760427577179
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-642912688 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
1 Returns the nth root of the product of n divisors
H Harmonic Mean
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 642912689 can be divided by 8 positive divisors.
The sum of these divisors (counting 642912689) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110010100100001000110110001
3
Ternary
1122210202100102002
4
Quaternary
212110201012301
5
Quinary
2304041201224
6
Senary
143443503345
8
Octal
4624410661
10
Decimal
642912689
12
Duodecimal
15b387b55
16
Hexadecimal
265211b1
20
Vigesimal
a0i41e9
36
Base36
amrult
md5
4d5dfb3bd9ee5149cc1ac14388e2a898
sha1
0f8b18f25efaf7df40bf8848264fec026a256635
sha256
5572667921bf7f17579cd9d3ea84d923299ce1a7ea37562a490d05b61cb30219
sha512
87b88f0ea84dc4ee5281e6223595e79595d6bb9a402995f4bf875542ad22264a4feadeec83d21fc8b96a937a5b21296b660089865d07acaed359b2e3b2938b3b
ripemd-160
b98c2668bda68c4f697357263280e3ae976a9f6f
Diameter
1285825378
Circumference
4039539561.3241
Area
1.2985356208464E+18
Volume
1.1131267036808E+27
Surface area
5.1941424833855E+18
Circumference
4039539561.3241
Perimeter
2571650756
Area
413336725677210721
Diagonal
909215844.20556
Surface area
2480020354063264326
Volume
2.6573942576759E+26
Space diagonal
1113557442.1787
Perimeter
1928738067
Area
1.7898005237677E+17
Altitude
556778721.08936
Surface area
1.7898005237677E+17
Volume
3.1317691664814E+25
Height
303071948.06852