21787989 (number)

21787989 is an odd 8-digits composite number following 21787988 and preceding 21787990. In scientific notation, it is written as 2.1787989 × 10^7. The sum of its digits is 51. It has a total of 4 prime factors and 16 positive divisors. There are 14294592 positive integers (up to 21787989) that are relatively prime to 21787989.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1787989 × 10^7
Engineering notation 2.1787989 × 10^6

Prime Factorization of 21787989

Prime Factorization 3 × 157 × 277 × 167

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21787989
Product of the distinct prime numbers

The prime factorization of 21787989 is 3 × 157 × 277 × 167. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 6, 87, 87, 491, 252, 4013, 5523, 98958, 54144, 416544, 475980, 8487615, 7110004, 63383206, 22781608, 582159186, 836537047, 2633411338, 8444144642

Basic calculations (n = 21787989)

Multiplication

n×y
n×2 43575978
n×3 65363967
n×4 87151956
n×5 108939945

Division

n÷y
n÷2 10893994.5
n÷3 7262663
n÷3 5446997.25
n÷5 4357597.8

Exponentiation

ny
n2 474716464664121
n3 1.0343117110221E+22
n4 2.253557218232E+29
n5 4.910047988171E+36

Nth Root

y√n
2√n 4667.7605979742
3√n 279.30093042127
4√n 68.321011394549
5√n 29.352387316024

Divisors of 21787989

1, 3, 157, 167, 277, 471, 501, 831, 26219, 43489, 46259, 78657, 130467, 138777, 7262663, 21787989

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21787988
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21787989 can be divided by 16 positive divisors. The sum of these divisors (counting 21787989) is 1, the average is 0.0625.

Base conversion 21787989

Base System Value
2 Binary 1010011000111010101010101
3 Ternary 1111222221111120
4 Quaternary 1103013111111
5 Quinary 21034203424
6 Senary 2054554153
8 Octal 123072525
10 Decimal 21787989
12 Duodecimal 7368959
16 Hexadecimal 14c7555
20 Vigesimal 6g39j9
36 Base36 cyzpx

Cryptographic Hash Functions

md5 2cdf92a61a5cf59c02fff053aa70a1f8
sha1 2c2fb27e6ba9cafd358561b4422799652dfe7b0a
sha256 b46d885b4e287e78cc507547bd2f61981a5995a9faec80549e0ae969d76ed076
sha512 f15162ee36d2dccad86bfc68ab693a21c76603215995b27d86a3296b0eea1aa854a0e234b52fce7adaab941bc3e8b9323e77900488589208f36b173e74073a6c
ripemd-160 8a927bf5b4445ae66801b5c63ae417a3fbbf3de9

21787989 as geometric shapes

Circle

Radius = n
Diameter 43575978
Circumference 136897972.35779
Area 1.4913657579269E+15

Sphere

Radius = n
Volume 4.3325147638251E+22
Surface area 5.9654630317077E+15
Circumference 136897972.35779

Square

Length = n
Perimeter 87151956
Area 474716464664121
Diagonal 30812869.540636

Cube

Length = n
Surface area 2848298787984726
Volume 1.0343117110221E+22
Space diagonal 37737903.942752

Equilateral Triangle

Length = n
Perimeter 65363967
Area 2.0555825899693E+14
Altitude 18868951.971376

Triangular Pyramid

Length = n
Surface area 2.0555825899693E+14
Volume 1.2189480412073E+21
Height 10270956.513545