21081261 (number)

21081261 is an odd 8-digits composite number following 21081260 and preceding 21081262. In scientific notation, it is written as 2.1081261 × 10^7. The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors. There are 13828800 positive integers (up to 21081261) that are relatively prime to 21081261.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-one thousand two hundred sixty-one

Notation

Scientific notation 2.1081261 × 10^7
Engineering notation 2.1081261 × 10^6

Prime Factorization of 21081261

Prime Factorization 3 × 173 × 151 × 269

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21081261
Product of the distinct prime numbers

The prime factorization of 21081261 is 3 × 173 × 151 × 269. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 3, 9, 44, 865, 824, 4113, 707, 73995, 75517, 2714, 651006, 7178389, 6591700, 59823442, 38263488, 599229799, 842633167, 256740658, 2735378217

Basic calculations (n = 21081261)

Multiplication

n×y
n×2 42162522
n×3 63243783
n×4 84325044
n×5 105406305

Division

n÷y
n÷2 10540630.5
n÷3 7027087
n÷3 5270315.25
n÷5 4216252.2

Exponentiation

ny
n2 444419565350121
n3 9.3689248506525E+21
n4 1.9750875006599E+29
n5 4.1637335099249E+36

Nth Root

y√n
2√n 4591.4334363029
3√n 276.247821417
4√n 67.760116855735
5√n 29.159449253751

Divisors of 21081261

1, 3, 151, 173, 269, 453, 519, 807, 26123, 40619, 46537, 78369, 121857, 139611, 7027087, 21081261

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 -21081260
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 21081261 can be divided by 16 positive divisors. The sum of these divisors (counting 21081261) is 1, the average is 0.0625.

Base conversion 21081261

Base System Value
2 Binary 1010000011010110010101101
3 Ternary 1110200001001110
4 Quaternary 1100122302231
5 Quinary 20344100021
6 Senary 2031502233
8 Octal 120326255
10 Decimal 21081261
12 Duodecimal 7087979
16 Hexadecimal 141acad
20 Vigesimal 6bf331
36 Base36 cjuel

Cryptographic Hash Functions

md5 05451435e58e5c8a64661b61ae5e700c
sha1 8fc334295345e7ca9b047c710c97ac55f8cc9aff
sha256 ca727767a0451523fe2ce51d64fcc0f8da62177fa66b0e3a4a57de765176ac58
sha512 32901800ccd72596ef54016d3a56d1722d5bb6bb8ca9e64a78207d0153fc2d13ad7d16bbdf024807f92875c78d5efe3037f672345e7bc28bcd484f7bc661b970
ripemd-160 fdac03d456a73cb28106fff952a25d6cb5f8f537

21081261 as geometric shapes

Circle

Radius = n
Diameter 42162522
Circumference 132457469.37202
Area 1.3961852416155E+15

Sphere

Radius = n
Volume 3.9244460643793E+22
Surface area 5.584740966462E+15
Circumference 132457469.37202

Square

Length = n
Perimeter 84325044
Area 444419565350121
Diagonal 29813405.218127

Cube

Length = n
Surface area 2666517392100726
Volume 9.3689248506525E+21
Space diagonal 36513815.13962

Equilateral Triangle

Length = n
Perimeter 63243783
Area 1.9243931676602E+14
Altitude 18256907.56981

Triangular Pyramid

Length = n
Surface area 1.9243931676602E+14
Volume 1.1041383823873E+21
Height 9937801.7393757