71978987 is an odd 8-digits composite number following 71978986
and preceding 71978988 . In scientific notation, it is written as 7.1978987 × 10^7.
The sum of its digits is 56. It has a total of 2 prime factors and 4 positive divisors.
There are 71850576 positive integers (up to 71978987) that are relatively prime to 71978987.
71978987 has 4 divisors, whose sum is 72107400
The reverse of 71978987 is 78987917
Previous prime number is 563
Is Prime? no Number parity odd Number length 8 Sum of Digits 56 Digital Root 2
Name
seventy-one million nine hundred seventy-eight thousand nine hundred eighty-seven
Scientific notation
7.1978987 × 10^7
Engineering notation
7.1978987 × 10^6
Prime Factorization
563 × 127849
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
71978987 Product of the distinct prime numbers
The prime factorization of 71978987 is 563 × 127849.
Since it has a total of 2 prime factors.
1 , 1 , 49 , 87 , 877 , 274 , 3272 , 4621 , 5076 , 60750 , 729225 , 955992 , 257613 , 5306992 , 72491132 , 1183249 , 874356004 , 604348734 , 1571143217 , 7425964306
n×2
143957974
n×3
215936961
n×4
287915948
n×5
359894935
n÷2
35989493.5
n÷3
23992995.666667
n÷3
17994746.75
n÷5
14395797.4
n2
5180974569546169
n3
3.7292130118869E+23
n4
2.6842497490284E+31
n5
1.9320957779007E+39
2 √n8484.0430809844
3 √n415.97628956023
4 √n92.108865376708
5 √n37.27701651208
4 divisors
τ Total Divisors
4 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-71978986 Sum of the proper positive divisors of n
A Arithmetic Mean
0.25 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
4 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 71978987 can be divided by 4 positive divisors.
The sum of these divisors (counting 71978987) is 1, the average is 0.25.
Base
System
Value
2
Binary
100010010100100111111101011
3
Ternary
12000102220121102
4
Quaternary
10102210333223
5
Quinary
121411311422
6
Senary
11050432015
8
Octal
422447753
10
Decimal
71978987
12
Duodecimal
2013260b
16
Hexadecimal
44a4feb
20
Vigesimal
129h797
36
Base36
16urcb
md5
27c3ae8a0719649d7b075c759b477ece
sha1
b69a122558bfebe4180ccae47c4c78727932b669
sha256
9a289e98afc548d013d7e79ed00ebfd866704b152c6600a1e93f91ad497b48ea
sha512
9bac775e0890990d2ef6350d489edaade58026344dae47375b4257e59608a755b747bea98aeef88ac9921b8c38384f09b88350235fae98a4dc33df039a576a5e
ripemd-160
647729b8044afed476c9977d2f27ed15416cee5a
Diameter
143957974
Circumference
452257313.54407
Area
1.6276511646122E+16
Volume
1.5620890935754E+24
Surface area
6.5106046584487E+16
Circumference
452257313.54407
Perimeter
287915948
Area
5180974569546169
Diagonal
101793659.62128
Surface area
31085847417277014
Volume
3.7292130118869E+23
Space diagonal
124671262.56134
Perimeter
215936961
Area
2.2434277967941E+15
Altitude
62335631.28067
Surface area
2.2434277967941E+15
Volume
4.3949196819906E+22
Height
33931219.873759