91997981 (number)

91997981 is an odd 8-digits composite number following 91997980 and preceding 91997982. In scientific notation, it is written as 9.1997981 × 10^7. The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors. There are 86761152 positive integers (up to 91997981) that are relatively prime to 91997981.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 9.1997981 × 10^7
Engineering notation 9.1997981 × 10^6

Prime Factorization of 91997981

Prime Factorization 19 × 223 × 21713

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 91997981
Product of the distinct prime numbers

The prime factorization of 91997981 is 19 × 223 × 21713. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 91997981)

Multiplication

n×y
n×2 183995962
n×3 275993943
n×4 367991924
n×5 459989905

Division

n÷y
n÷2 45998990.5
n÷3 30665993.666667
n÷3 22999495.25
n÷5 18399596.2

Exponentiation

ny
n2 8463628508076361
n3 7.7863673467707E+23
n4 7.1633007522723E+31
n5 6.5900920650483E+39

Nth Root

y√n
2√n 9591.5577983975
3√n 451.43244117264
4√n 97.936498806101
5√n 39.15215391166

Divisors of 91997981

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -91997980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 91997981 can be divided by 8 positive divisors. The sum of these divisors (counting 91997981) is 1, the average is 0.125.

Base conversion 91997981

Base System Value
2 Binary 101011110111100011100011101
3 Ternary 20102002222111122
4 Quaternary 11132330130131
5 Quinary 142022413411
6 Senary 13043500325
8 Octal 536743435
10 Decimal 91997981
12 Duodecimal 269876a5
16 Hexadecimal 57bc71d
20 Vigesimal 18ejej1
36 Base36 1iru3h

Cryptographic Hash Functions

md5 6e24bf667a4b5bb3a426baa2fa4dcf22
sha1 ac8611e3a5fe225ba74d0a6457df181033bfac42
sha256 22d851ee1f8858282082270ae2a4e204b339161aaf930318a15850489ba4d55b
sha512 2109656c095208fa7752e47a49e86b4d3a56ed028293cf72cb13539b592c583a5f8a6fd055194334e87c86bc8c9464aed08c1cd6bc8f2e6d46a14b0af951443f
ripemd-160 b4c856d7a9e4210da3f36a1d666418ae1dc362ba

91997981 as geometric shapes

Circle

Radius = n
Diameter 183995962
Circumference 578040362.50939
Area 2.6589273143686E+16

Sphere

Radius = n
Volume 3.2615459273022E+24
Surface area 1.0635709257474E+17
Circumference 578040362.50939

Square

Length = n
Perimeter 367991924
Area 8463628508076361
Diagonal 130104792.44114

Cube

Length = n
Surface area 50781771048458166
Volume 7.7863673467707E+23
Space diagonal 159345177.28576

Equilateral Triangle

Length = n
Perimeter 275993943
Area 3.6648586480942E+15
Altitude 79672588.642878

Triangular Pyramid

Length = n
Surface area 3.6648586480942E+15
Volume 9.1763219195184E+22
Height 43368264.147047