21581245 (number)

21581245 is an odd 8-digits composite number following 21581244 and preceding 21581246. In scientific notation, it is written as 2.1581245 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors. There are 12469248 positive integers (up to 21581245) that are relatively prime to 21581245.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1581245 × 10^7
Engineering notation 2.1581245 × 10^6

Prime Factorization of 21581245

Prime Factorization 805 × 19 × 17 × 83

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21581245
Product of the distinct prime numbers

The prime factorization of 21581245 is 805 × 19 × 17 × 83. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 2, 42, 58, 156, 224, 6868, 9797, 36865, 81673, 465031, 135762, 7857597, 9976893, 92242877, 55494239, 869358985, 661094338, 4138777123, 5339574358

Basic calculations (n = 21581245)

Multiplication

n×y
n×2 43162490
n×3 64743735
n×4 86324980
n×5 107906225

Division

n÷y
n÷2 10790622.5
n÷3 7193748.3333333
n÷3 5395311.25
n÷5 4316249

Exponentiation

ny
n2 465750135750025
n3 1.0051467788405E+22
n4 2.1692318895117E+29
n5 4.6814724869364E+36

Nth Root

y√n
2√n 4645.5618605288
3√n 278.41470204788
4√n 68.158358698907
5√n 29.296470314594

Divisors of 21581245

1, 17, 19, 83, 323, 805, 1411, 1577, 13685, 15295, 26809, 66815, 260015, 1135855, 1269485, 21581245

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 -21581244
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 21581245 can be divided by 16 positive divisors. The sum of these divisors (counting 21581245) is 1, the average is 0.0625.

Base conversion 21581245

Base System Value
2 Binary 1010010010100110110111101
3 Ternary 1111121102220101
4 Quaternary 1102110312331
5 Quinary 21011044440
6 Senary 2050321101
8 Octal 122246675
10 Decimal 21581245
12 Duodecimal 7289191
16 Hexadecimal 1494dbd
20 Vigesimal 6ehd25
36 Base36 cuk71

Cryptographic Hash Functions

md5 533f1ec9dab31297528dad6687274ae8
sha1 ba92f1b4b827f0abe9565f12079f5ff52c3a89b1
sha256 533c2bdd6bc041d55d1db822370daf9d6a04eadc2c2dff49ce1eed5eb14ff2db
sha512 bd9e136d8100fff1a66ac5c86b7cc9d68c982bdd4115218bdf143cd66c61c335f6cab3ad58f5ff6137083b2b7a983083264747daf7cec527cbb1c3d93b4513cb
ripemd-160 46e1693029ac4b3a98ef3abab0f4635b73722fc5

21581245 as geometric shapes

Circle

Radius = n
Diameter 43162490
Circumference 135598961.49464
Area 1.4631972048807E+15

Sphere

Radius = n
Volume 4.2103489815795E+22
Surface area 5.8527888195229E+15
Circumference 135598961.49464

Square

Length = n
Perimeter 86324980
Area 465750135750025
Diagonal 30520489.371897

Cube

Length = n
Surface area 2794500814500150
Volume 1.0051467788405E+22
Space diagonal 37379812.830592

Equilateral Triangle

Length = n
Perimeter 64743735
Area 2.0167572468779E+14
Altitude 18689906.415296

Triangular Pyramid

Length = n
Surface area 2.0167572468779E+14
Volume 1.1845768390098E+21
Height 10173496.457299