642720 is an even 6-digits composite number following 642719
and preceding 642721 . In scientific notation, it is written as 6.42720 × 10^5.
The sum of its digits is 21. It has a total of 7 prime factors and 24 positive divisors.
There are 156672 positive integers (up to 642720) that are relatively prime to 642720.
642720 has 24 divisors, whose sum is 1363572
The reverse of 642720 is 027246
Previous prime number is 1545
Is Prime? no
Number parity even
Number length 6
Sum of Digits 21
Digital Root 3
Name
six hundred forty-two thousand seven hundred twenty
Scientific notation
6.42720 × 10^5
Engineering notation
6.42720 × 10^3
Prime Factorization
2 × 2 × 2 × 2 × 2 × 1545 × 13
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
7
Total number of prime factors
rad
Radical
40170
Product of the distinct prime numbers
The prime factorization of 642720 is 2 × 2 × 2 × 2 × 2 × 1545 × 13.
Since it has a total of 7 prime factors.
7 , 5 , 28 , 88 , 572 , 52 , 4755 , 4660 , 38116 , 89569 , 664145 , 679614 , 4828395 , 8868669 , 9096617 , 46167882 , 649131826 , 976246993 , 1044476471 , 6109870067
n×2
1285440
n×3
1928160
n×4
2570880
n×5
3213600
n÷2
321360
n÷3
214240
n÷3
160680
n÷5
128544
n2
413088998400
n3
265500561051648000
n4
1.7064252059912E+23
n5
1.0967536083946E+29
2 √n
801.69819757812
3 √n
86.29929968769
4 √n
28.314275508621
5 √n
14.507893634958
1 , 2 , 4 , 8 , 13 , 16 , 26 , 32 , 52 , 104 , 208 , 416 , 1545 , 3090 , 6180 , 12360 , 20085 , 24720 , 40170 , 49440 , 80340 , 160680 , 321360 , 642720
24 divisors
τ
Total Divisors
24
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-642719
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.041666666666667
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
24
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 642720 can be divided by 24 positive divisors.
The sum of these divisors (counting 642720) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
10011100111010100000
3
Ternary
1012122122110
4
Quaternary
2130322200
5
Quinary
131031340
6
Senary
21435320
8
Octal
2347240
10
Decimal
642720
12
Duodecimal
26bb40
16
Hexadecimal
9cea0
20
Vigesimal
406g0
36
Base36
drxc
md5
fdcf535d6c56d455ea1e2a544d2aed70
sha1
2a90fedb53e72cf82c7793b9db010047607b5616
sha256
420f9f77ff9f849516df67ee4e01d829ef18699024e605099cc6d7bed36556c1
sha512
997d734809151a6f53ef642ecc99b58984a1f55dee18123bd8dfc0b11a136b55d5d01fa21f7890fc72360eb743bd1709db58be2228e5561ce3c46ad6a273e7cc
ripemd-160
f2df15826b2023b63694bae62891a9e9f4abff8b
Diameter
1285440
Circumference
4038328.8606305
Area
1297757362652.2
Volume
1.1121261494984E+18
Surface area
5191029450608.8
Circumference
4038328.8606305
Perimeter
2570880
Area
413088998400
Diagonal
908943.34080844
Surface area
2478533990400
Volume
265500561051648000
Space diagonal
1113223.6950407
Perimeter
1928160
Area
178872783319.13
Altitude
556611.84752033
Surface area
178872783319.13
Volume
3.1289541188076E+16
Height
302981.11360281