21032981 (number)

21032981 is an odd 8-digits composite number following 21032980 and preceding 21032982. In scientific notation, it is written as 2.1032981 × 10^7. The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors. There are 19925964 positive integers (up to 21032981) that are relatively prime to 21032981.

Interesting facts

Basic properties

Name

Name twenty-one million thirty-two thousand nine hundred eighty-one

Notation

Scientific notation 2.1032981 × 10^7
Engineering notation 2.1032981 × 10^6

Prime Factorization of 21032981

Prime Factorization 19 × 1106999

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21032981
Product of the distinct prime numbers

The prime factorization of 21032981 is 19 × 1106999. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 10, 29, 88, 702, 262, 7907, 1263, 84082, 85328, 950847, 136565, 8766285, 2500191, 36911796, 83056618, 450343267, 12293374, 8115273107, 9307598992

Basic calculations (n = 21032981)

Multiplication

n×y
n×2 42065962
n×3 63098943
n×4 84131924
n×5 105164905

Division

n÷y
n÷2 10516490.5
n÷3 7010993.6666667
n÷3 5258245.25
n÷5 4206596.2

Exponentiation

ny
n2 442386289746361
n3 9.3047024268957E+21
n4 1.9570562935555E+29
n5 4.1162727838284E+36

Nth Root

y√n
2√n 4586.172805292
3√n 276.03677396304
4√n 67.72128768188
5√n 29.14608089167

Divisors of 21032981

1, 19, 1106999, 21032981

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 -21032980
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 21032981 can be divided by 4 positive divisors. The sum of these divisors (counting 21032981) is 1, the average is 0.25.

Base conversion 21032981

Base System Value
2 Binary 1010000001111000000010101
3 Ternary 1110120120211022
4 Quaternary 1100033000111
5 Quinary 20341023411
6 Senary 2030450525
8 Octal 120170025
10 Decimal 21032981
12 Duodecimal 7063a45
16 Hexadecimal 140f015
20 Vigesimal 6b9291
36 Base36 cit5h

Cryptographic Hash Functions

md5 e23ece1bb2e3a7de0a43a8a57a6e41eb
sha1 1fde9c41842052b845a40b039f29b08d9f7aa4e5
sha256 c71e319e29ccbef8f5d767ac5da7298f970886262e96dfbf710c8db4e1b5ea94
sha512 8c8f58cb1d50f288f82304ac40c442eb2e4185e72fd03aa64b5a24860e67ee15665b16a86be494f573d9a84f2fdf15de174374887938a52b91af17f82ec7475f
ripemd-160 327a5a20f583c2d301eaf3c495099bd9a7150fe1

21032981 as geometric shapes

Circle

Radius = n
Diameter 42065962
Circumference 132154117.18539
Area 1.389797517916E+15

Sphere

Radius = n
Volume 3.8975446384233E+22
Surface area 5.5591900716641E+15
Circumference 132154117.18539

Square

Length = n
Perimeter 84131924
Area 442386289746361
Diagonal 29745126.987336

Cube

Length = n
Surface area 2654317738478166
Volume 9.3047024268957E+21
Space diagonal 36430191.726631

Equilateral Triangle

Length = n
Perimeter 63098943
Area 1.9155888260315E+14
Altitude 18215095.863315

Triangular Pyramid

Length = n
Surface area 1.9155888260315E+14
Volume 1.0965696971635E+21
Height 9915042.3291119