20161991 (number)

20161991 is an odd 8-digits prime number following 20161990 and preceding 20161992. In scientific notation, it is written as 2.0161991 × 10^7. The sum of its digits is 29. It has a total of 1 prime factors and 2 positive divisors. There are 20161990 positive integers (up to 20161991) that are relatively prime to 20161991.

Interesting facts

Basic properties

Name

Name twenty million one hundred sixty-one thousand nine hundred ninety-one

Notation

Scientific notation 2.0161991 × 10^7
Engineering notation 2.0161991 × 10^6

Prime Factorization of 20161991

Prime Factorization 20161991

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 20161991
Product of the distinct prime numbers

The prime factorization of 20161991 is 20161991. Since it has a total of 1 prime factors.

Most popular turbo-numbers

3, 10, 45, 36, 803, 695, 1612, 598, 66753, 66844, 307808, 581392, 2670442, 2414151, 65603360, 38216754, 637858235, 4429155, 5704264291, 4643625192

Basic calculations (n = 20161991)

Multiplication

n×y
n×2 40323982
n×3 60485973
n×4 80647964
n×5 100809955

Division

n÷y
n÷2 10080995.5
n÷3 6720663.6666667
n÷3 5040497.75
n÷5 4032398.2

Exponentiation

ny
n2 406505881084081
n3 8.1959679158643E+21
n4 1.6524703135595E+29
n5 3.3317091589753E+36

Nth Root

y√n
2√n 4490.2105741268
3√n 272.1726439645
4√n 67.009033526285
5√n 28.90058829797

Divisors of 20161991

1, 20161991

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 20161992
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 10080996
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 4490.2106854801
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999008035
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20161991 can be divided by 2 positive divisors. The sum of these divisors (counting 20161991) is 20161992, the average is 10080996.

Base conversion 20161991

Base System Value
2 Binary 1001100111010010111000111
3 Ternary 1101221100001102
4 Quaternary 1030322113013
5 Quinary 20130140431
6 Senary 2000050315
8 Octal 114722707
10 Decimal 20161991
12 Duodecimal 690399b
16 Hexadecimal 133a5c7
20 Vigesimal 6604jb
36 Base36 c053b

Cryptographic Hash Functions

md5 706b752a4b3dcd579b6f2e563dc8f2b4
sha1 60b86e608a4de113d5e9bd5b36f3c047c2d20911
sha256 df09f6d686f6d0bebec3353d8f14ffad0272202cf8844b322f0f7734413d7eb9
sha512 b50b27adc539fe1a1b207b9e3785dda2c3c4ef622d20c3df8ceb45944f2767da38a3f23e5f01cd186050672f161e02c267b3c7118d06cd3f064bea7bd62024bb
ripemd-160 f0cd80d9f042e1d8da36f643aa771bd0647a327c

20161991 as geometric shapes

Circle

Radius = n
Diameter 40323982
Circumference 126681525.61469
Area 1.2770758896548E+15

Sphere

Radius = n
Volume 3.4331190124716E+22
Surface area 5.1083035586192E+15
Circumference 126681525.61469

Square

Length = n
Perimeter 80647964
Area 406505881084081
Diagonal 28513361.116644

Cube

Length = n
Surface area 2439035286504486
Volume 8.1959679158643E+21
Space diagonal 34921592.793746

Equilateral Triangle

Length = n
Perimeter 60485973
Area 1.760222099033E+14
Altitude 17460796.396873

Triangular Pyramid

Length = n
Surface area 1.760222099033E+14
Volume 9.6590408194917E+20
Height 9504453.7055481