81998957 (number)

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.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred ninety-eight thousand nine hundred fifty-seven

Notation

Scientific notation 8.1998957 × 10^7
Engineering notation 8.1998957 × 10^6

Prime Factorization of 81998957

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.

Most popular turbo-numbers

Basic calculations (n = 81998957)

Multiplication

n×y
n×2 163997914
n×3 245996871
n×4 327995828
n×5 409994785

Division

n÷y
n÷2 40999478.5
n÷3 27332985.666667
n÷3 20499739.25
n÷5 16399791.4

Exponentiation

ny
n2 6723828949087849
n3 5.5134696087161E+23
n4 4.5209875736592E+31
n5 3.7071626565001E+39

Nth Root

y√n
2√n 9055.3275479134
3√n 434.44630657954
4√n 95.15948480269
5√n 38.261471244466

Divisors of 81998957

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 conversion 81998957

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

Cryptographic Hash Functions

md5 7c6abed2de305e43a2827f12a95638bd
sha1 abd1b4184d07e05a5da73cc9230af8a8ebf863e5
sha256 0e011c36681045f00c202c2adbd21f0bd44a7b926b150d7a501d28d55d389f88
sha512 83e7eb1feede899c4eec1da1898b6e8c89dd31a23ab9b629be299f798e3afb1b869450e491aa9ea9a8f9844813cdc2233741f38d8e43b63dad5836c86c430803
ripemd-160 dcc0f34bc283617e294378499d665e9d1d931f5c

81998957 as geometric shapes

Circle

Radius = n
Diameter 163997914
Circumference 515214641.82645
Area 2.1123531630449E+16

Sphere

Radius = n
Volume 2.3094767491377E+24
Surface area 8.4494126521795E+16
Circumference 515214641.82645

Square

Length = n
Perimeter 327995828
Area 6723828949087849
Diagonal 115964037.08985

Cube

Length = n
Surface area 40342973694527094
Volume 5.5134696087161E+23
Space diagonal 142026359.69166

Equilateral Triangle

Length = n
Perimeter 245996871
Area 2.9115033403057E+15
Altitude 71013179.845828

Triangular Pyramid

Length = n
Surface area 2.9115033403057E+15
Volume 6.4976862469818E+22
Height 38654679.029949