21568991 (number)

21568991 is an odd 8-digits composite number following 21568990 and preceding 21568992. In scientific notation, it is written as 2.1568991 × 10^7. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 21426000 positive integers (up to 21568991) that are relatively prime to 21568991.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1568991 × 10^7
Engineering notation 2.1568991 × 10^6

Prime Factorization of 21568991

Prime Factorization 151 × 142841

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21568991
Product of the distinct prime numbers

The prime factorization of 21568991 is 151 × 142841. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 4, 73, 52, 778, 259, 1305, 2838, 62775, 24477, 138922, 996222, 4854907, 695328, 18909335, 19135946, 406189414, 864929568, 2699682258, 7686155134

Basic calculations (n = 21568991)

Multiplication

n×y
n×2 43137982
n×3 64706973
n×4 86275964
n×5 107844955

Division

n÷y
n÷2 10784495.5
n÷3 7189663.6666667
n÷3 5392247.75
n÷5 4313798.2

Exponentiation

ny
n2 465221372758081
n3 1.0034355602027E+22
n4 2.1643092567091E+29
n5 4.6681966879176E+36

Nth Root

y√n
2√n 4644.242780045
3√n 278.36199672139
4√n 68.148681425579
5√n 29.293142605632

Divisors of 21568991

1, 151, 142841, 21568991

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21568990
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21568991 can be divided by 4 positive divisors. The sum of these divisors (counting 21568991) is 1, the average is 0.25.

Base conversion 21568991

Base System Value
2 Binary 1010010010001110111011111
3 Ternary 1111120211002112
4 Quaternary 1102101313133
5 Quinary 21010201431
6 Senary 2050144235
8 Octal 122216737
10 Decimal 21568991
12 Duodecimal 728207b
16 Hexadecimal 1491ddf
20 Vigesimal 6eg29b
36 Base36 cuaqn

Cryptographic Hash Functions

md5 c0d3c51434cdae030f9dfd3f323e0f78
sha1 bfb6420f6b5050869edc820546f59b44c7499e17
sha256 f069caa9b677f41344391d03d1a25db6d82d797d5a747929b2cb638bbd5fbbeb
sha512 2eb6121fc9ce3de9413da3206f81930ec910951a534f7231b722d8ff95ef31b849e9204618915f36de7ff243b695baa99dffe0f2b6539314ebaf51f7ef95ab2a
ripemd-160 5404922eb92a71366b105ab93304c205e61875f6

21568991 as geometric shapes

Circle

Radius = n
Diameter 43137982
Circumference 135521967.34189
Area 1.4615360469497E+15

Sphere

Radius = n
Volume 4.2031810457113E+22
Surface area 5.846144187799E+15
Circumference 135521967.34189

Square

Length = n
Perimeter 86275964
Area 465221372758081
Diagonal 30503159.598903

Cube

Length = n
Surface area 2791328236548486
Volume 1.0034355602027E+22
Space diagonal 37358588.279996

Equilateral Triangle

Length = n
Perimeter 64706973
Area 2.0144676359598E+14
Altitude 18679294.139998

Triangular Pyramid

Length = n
Surface area 2.0144676359598E+14
Volume 1.182560148505E+21
Height 10167719.866301