71978981 is an odd 8-digits prime number following 71978980
and preceding 71978982 . In scientific notation, it is written as 7.1978981 × 10^7.
The sum of its digits is 50. It has a total of 1 prime factors and 2 positive divisors.
There are 71978980 positive integers (up to 71978981) that are relatively prime to 71978981.
71978981 has 2 divisors, whose sum is 71978982
The reverse of 71978981 is 18987917
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 50
Digital Root 5
Name
seventy-one million nine hundred seventy-eight thousand nine hundred eighty-one
Scientific notation
7.1978981 × 10^7
Engineering notation
7.1978981 × 10^6
Prime Factorization
71978981
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
71978981
Product of the distinct prime numbers
The prime factorization of 71978981 is 71978981.
Since it has a total of 1 prime factors.
10 , 7 , 17 , 57 , 992 , 517 , 718 , 6785 , 88273 , 63959 , 453642 , 976615 , 4715724 , 3124258 , 47204097 , 22908558 , 888368310 , 321374520 , 8860395605 , 2340896003
n×2
143957962
n×3
215936943
n×4
287915924
n×5
359894905
n÷2
35989490.5
n÷3
23992993.666667
n÷3
17994745.25
n÷5
14395796.2
n2
5180973705798361
n3
3.7292120793116E+23
n4
2.6842488540174E+31
n5
1.9320949726259E+39
2 √n
8484.0427273794
3 √n
415.97627800196
4 √n
92.108863457213
5 √n
37.277015890615
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
71978982
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
35989491
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
8484.0427863136
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999722141
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 71978981 can be divided by 2 positive divisors.
The sum of these divisors (counting 71978981) is 71978982, the average is 35989491.
Base
System
Value
2
Binary
100010010100100111111100101
3
Ternary
12000102220121012
4
Quaternary
10102210333211
5
Quinary
121411311411
6
Senary
11050432005
8
Octal
422447745
10
Decimal
71978981
12
Duodecimal
20132605
16
Hexadecimal
44a4fe5
20
Vigesimal
129h791
36
Base36
16urc5
md5
a82e27ccc56387f34244498c6aba6df9
sha1
5073254ab622925e64b708df8f573bd3fc7bd2b6
sha256
81f107df668f225a6bb6284558cda77091ac4a1870a04a06fa77db5a1e5b8fdd
sha512
650e5104f91f32f2260b54b025d4a5270131370ce8c10d1f125c4f85120a5a003f282298b7f6f4603088a1b514865f0da086ea9fc08dab3b552686896c2a2303
ripemd-160
fcf69f377e7b9df281f59982e5c97d18e186cd07
Diameter
143957962
Circumference
452257275.84496
Area
1.6276508932578E+16
Volume
1.5620887029392E+24
Surface area
6.5106035730312E+16
Circumference
452257275.84496
Perimeter
287915924
Area
5180973705798361
Diagonal
101793651.136
Surface area
31085842234790166
Volume
3.7292120793116E+23
Space diagonal
124671252.16903
Perimeter
215936943
Area
2.2434274227803E+15
Altitude
62335626.084517
Surface area
2.2434274227803E+15
Volume
4.39491858294E+22
Height
33931217.045332