161909968 (number)

161909968 is an even 9-digits composite number following 161909967 and preceding 161909969. In scientific notation, it is written as 1.61909968 × 10^8. The sum of its digits is 49. It has a total of 7 prime factors and 40 positive divisors. There are 73405440 positive integers (up to 161909968) that are relatively prime to 161909968.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million nine hundred nine thousand nine hundred sixty-eight

Notation

Scientific notation 1.61909968 × 10^8
Engineering notation 1.61909968 × 10^6

Prime Factorization of 161909968

Prime Factorization 2 × 2 × 2 × 2 × 11 × 487 × 1889

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20238746
Product of the distinct prime numbers

The prime factorization of 161909968 is 2 × 2 × 2 × 2 × 11 × 487 × 1889. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 161909968)

Multiplication

n×y
n×2 323819936
n×3 485729904
n×4 647639872
n×5 809549840

Division

n÷y
n÷2 80954984
n÷3 53969989.333333
n÷3 40477492
n÷5 32381993.6

Exponentiation

ny
n2 26214837737761024
n3 4.2444435392461E+24
n4 6.8721771761714E+32
n5 1.1126739866842E+41

Nth Root

y√n
2√n 12724.384778841
3√n 545.03517209812
4√n 112.80241477398
5√n 43.838402257724

Divisors of 161909968

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161909967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161909968 can be divided by 40 positive divisors. The sum of these divisors (counting 161909968) is 1, the average is 0.025.

Base conversion 161909968

Base System Value
2 Binary 1001101001101000110011010000
3 Ternary 102021122212201111
4 Quaternary 21221220303100
5 Quinary 312422104333
6 Senary 24022143104
8 Octal 1151506320
10 Decimal 161909968
12 Duodecimal 46281a94
16 Hexadecimal 9a68cd0
20 Vigesimal 2abiei8
36 Base36 2oeaj4

Cryptographic Hash Functions

md5 74bc4613f740b24230c72abb780c864a
sha1 e4cff47a3e9e3638c01d1096171ab4016fc8719f
sha256 1d44156f7cf9cde1fb91a720a8b79eb443e4afea4378e802e764a6d000361090
sha512 0968fb609138dacf34ba5a42d116153dcded7af5997d8b25bfbf16b34b1fe7bd2b5d3bed33c921d105b02d613f1fc5a3686ae23447db2dc764ea99b378912b0d
ripemd-160 edc433ef50d4925e832b7158b0f7a30ca44fd704

161909968 as geometric shapes

Circle

Radius = n
Diameter 323819936
Circumference 1017310332.0235
Area 8.2356341651999E+16

Sphere

Radius = n
Volume 1.7779083521963E+25
Surface area 3.2942536660799E+17
Circumference 1017310332.0235

Square

Length = n
Perimeter 647639872
Area 26214837737761024
Diagonal 228975272.62899

Cube

Length = n
Surface area 157289026426566144
Volume 4.2444435392461E+24
Space diagonal 280436290.82785

Equilateral Triangle

Length = n
Perimeter 485729904
Area 1.1351357718494E+16
Altitude 140218145.41393

Triangular Pyramid

Length = n
Surface area 1.1351357718494E+16
Volume 5.0021246816072E+23
Height 76325090.876331