81998957 is an odd 8-digits prime number following 81998956
and preceding 81998958 . In scientific notation, it is written as 8.1998957 × 10^7.
The sum of its digits is 56. It has a total of 1 prime factors and 2 positive divisors.
There are 81998956 positive integers (up to 81998957) that are relatively prime to 81998957.
81998957 has 2 divisors, whose sum is 81998958
The reverse of 81998957 is 75989918
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 56 Digital Root 2
Name
eighty-one million nine hundred ninety-eight thousand nine hundred fifty-seven
Scientific notation
8.1998957 × 10^7
Engineering notation
8.1998957 × 10^6
Prime Factorization
81998957
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81998957 Product of the distinct prime numbers
The prime factorization of 81998957 is 81998957.
Since it has a total of 1 prime factors.
1 , 9 , 29 , 53 , 91 , 586 , 5655 , 5741 , 18860 , 94108 , 666942 , 834224 , 4565777 , 5937456 , 40062341 , 68002277 , 514127190 , 538955656 , 9174961064 , 7017676374
n×2
163997914
n×3
245996871
n×4
327995828
n×5
409994785
n÷2
40999478.5
n÷3
27332985.666667
n÷3
20499739.25
n÷5
16399791.4
n2
6723828949087849
n3
5.5134696087161E+23
n4
4.5209875736592E+31
n5
3.7071626565001E+39
2 √n9055.3275479134
3 √n434.44630657954
4 √n95.15948480269
5 √n38.261471244466
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81998958 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40999479 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9055.3276031296 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999756094 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81998957 can be divided by 2 positive divisors.
The sum of these divisors (counting 81998957) is 81998958, the average is 40999479.
Base
System
Value
2
Binary
100111000110011010001101101
3
Ternary
12201021222102102
4
Quaternary
10320303101231
5
Quinary
131442431312
6
Senary
12045304445
8
Octal
470632155
10
Decimal
81998957
12
Duodecimal
23565125
16
Hexadecimal
4e3346d
20
Vigesimal
15c9h7h
36
Base36
1ctist
md5
7c6abed2de305e43a2827f12a95638bd
sha1
abd1b4184d07e05a5da73cc9230af8a8ebf863e5
sha256
0e011c36681045f00c202c2adbd21f0bd44a7b926b150d7a501d28d55d389f88
sha512
83e7eb1feede899c4eec1da1898b6e8c89dd31a23ab9b629be299f798e3afb1b869450e491aa9ea9a8f9844813cdc2233741f38d8e43b63dad5836c86c430803
ripemd-160
dcc0f34bc283617e294378499d665e9d1d931f5c
Diameter
163997914
Circumference
515214641.82645
Area
2.1123531630449E+16
Volume
2.3094767491377E+24
Surface area
8.4494126521795E+16
Circumference
515214641.82645
Perimeter
327995828
Area
6723828949087849
Diagonal
115964037.08985
Surface area
40342973694527094
Volume
5.5134696087161E+23
Space diagonal
142026359.69166
Perimeter
245996871
Area
2.9115033403057E+15
Altitude
71013179.845828
Surface area
2.9115033403057E+15
Volume
6.4976862469818E+22
Height
38654679.029949