21087745 (number)

21087745 is an odd 8-digits composite number following 21087744 and preceding 21087746. In scientific notation, it is written as 2.1087745 × 10^7. The sum of its digits is 34. It has a total of 4 prime factors and 16 positive divisors. There are 14402304 positive integers (up to 21087745) that are relatively prime to 21087745.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-seven thousand seven hundred forty-five

Notation

Scientific notation 2.1087745 × 10^7
Engineering notation 2.1087745 × 10^6

Prime Factorization of 21087745

Prime Factorization 7 × 5 × 283 × 2129

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21087745
Product of the distinct prime numbers

The prime factorization of 21087745 is 7 × 5 × 283 × 2129. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 2, 77, 9, 197, 150, 5692, 43, 29878, 25780, 110707, 141861, 5709726, 3193923, 56143875, 69098857, 181463061, 418329760, 2808798606, 3379873808

Basic calculations (n = 21087745)

Multiplication

n×y
n×2 42175490
n×3 63263235
n×4 84350980
n×5 105438725

Division

n÷y
n÷2 10543872.5
n÷3 7029248.3333333
n÷3 5271936.25
n÷5 4217549

Exponentiation

ny
n2 444692989185025
n3 9.3775723592216E+21
n4 1.9775185463031E+29
n5 4.1701406837211E+36

Nth Root

y√n
2√n 4592.139479589
3√n 276.27614052096
4√n 67.765326529052
5√n 29.161242757586

Divisors of 21087745

1, 5, 7, 35, 283, 1415, 1981, 2129, 9905, 10645, 14903, 74515, 602507, 3012535, 4217549, 21087745

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 -21087744
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 21087745 can be divided by 16 positive divisors. The sum of these divisors (counting 21087745) is 1, the average is 0.0625.

Base conversion 21087745

Base System Value
2 Binary 1010000011100011000000001
3 Ternary 1110200100221121
4 Quaternary 1100130120001
5 Quinary 20344301440
6 Senary 2031552241
8 Octal 120343001
10 Decimal 21087745
12 Duodecimal 708b681
16 Hexadecimal 141c601
20 Vigesimal 6bfj75
36 Base36 cjzep

Cryptographic Hash Functions

md5 c26dfaa97a746b9886fd73766757598c
sha1 d8c9e0903a2544bd61aa6190e81c4cfbb3d92f51
sha256 4def7011fcf841639b8f787a22ef6cf81511dd37e98c223950b0585c4ac31f31
sha512 bd65b1146daae95cb7d5b5c1115021de9c4226d492f130932857934af0d928803403d6639db1a661091b88d0975a8d0af5d0b0c7005c022528167037682a40af
ripemd-160 72d89ddade921965b13fe12889357312bfc51549

21087745 as geometric shapes

Circle

Radius = n
Diameter 42175490
Circumference 132498209.54555
Area 1.3970442279266E+15

Sphere

Radius = n
Volume 3.9280683242983E+22
Surface area 5.5881769117062E+15
Circumference 132498209.54555

Square

Length = n
Perimeter 84350980
Area 444692989185025
Diagonal 29822574.978865

Cube

Length = n
Surface area 2668157935110150
Volume 9.3775723592216E+21
Space diagonal 36525045.757057

Equilateral Triangle

Length = n
Perimeter 63263235
Area 1.9255771275954E+14
Altitude 18262522.878528

Triangular Pyramid

Length = n
Surface area 1.9255771275954E+14
Volume 1.1051575010455E+21
Height 9940858.3262885