21491902 (number)

21491902 is an even 8-digits composite number following 21491901 and preceding 21491903. In scientific notation, it is written as 2.1491902 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors. There are 10545408 positive integers (up to 21491902) that are relatively prime to 21491902.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand nine hundred two

Notation

Scientific notation 2.1491902 × 10^7
Engineering notation 2.1491902 × 10^6

Prime Factorization of 21491902

Prime Factorization 2 × 97 × 139 × 797

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21491902
Product of the distinct prime numbers

The prime factorization of 21491902 is 2 × 97 × 139 × 797. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 6, 59, 54, 219, 908, 1599, 1495, 30565, 63195, 415921, 983966, 2984161, 2168895, 95306308, 26727675, 134035338, 255004804, 4457259305, 6261830031

Basic calculations (n = 21491902)

Multiplication

n×y
n×2 42983804
n×3 64475706
n×4 85967608
n×5 107459510

Division

n÷y
n÷2 10745951
n÷3 7163967.3333333
n÷3 5372975.5
n÷5 4298380.4

Exponentiation

ny
n2 461901851577604
n3 9.9271493277244E+21
n4 2.1335332049082E+29
n5 4.5853686553633E+36

Nth Root

y√n
2√n 4635.9359357092
3√n 278.02997278753
4√n 68.087707669661
5√n 29.272173480435

Divisors of 21491902

1, 2, 97, 139, 194, 278, 797, 1594, 13483, 26966, 77309, 110783, 154618, 221566, 10745951, 21491902

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 -21491901
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 21491902 can be divided by 16 positive divisors. The sum of these divisors (counting 21491902) is 1, the average is 0.0625.

Base conversion 21491902

Base System Value
2 Binary 1010001111111000010111110
3 Ternary 1111102220100101
4 Quaternary 1101333002332
5 Quinary 21000220102
6 Senary 2044351314
8 Octal 121770276
10 Decimal 21491902
12 Duodecimal 724553a
16 Hexadecimal 147f0be
20 Vigesimal 6e69f2
36 Base36 csn9a

Cryptographic Hash Functions

md5 3008650273bf5b57c5979d1cced2309d
sha1 e736a77533d3d4145ca09847e0be27b6bad9b9dd
sha256 6922099a7dc2b835c893ae93083761e6a44d7f597410b3e3f667a0b82e404c7e
sha512 2d642dc36db9a5cf72004d2716f83fdd5a26ecb8b4cd069b682c6658b57966917647f1ae09f660eb38b2775c833eab0932034d4c283880306a019b6f849841c2
ripemd-160 31e40d5bb7a8b19345ac133ecf4c4b2f1cdb354d

21491902 as geometric shapes

Circle

Radius = n
Diameter 42983804
Circumference 135037602.86974
Area 1.4511074635957E+15

Sphere

Radius = n
Volume 4.1582745865424E+22
Surface area 5.8044298543829E+15
Circumference 135037602.86974

Square

Length = n
Perimeter 85967608
Area 461901851577604
Diagonal 30394139.289593

Cube

Length = n
Surface area 2771411109465624
Volume 9.9271493277244E+21
Space diagonal 37225066.215291

Equilateral Triangle

Length = n
Perimeter 64475706
Area 2.0000936876064E+14
Altitude 18612533.107646

Triangular Pyramid

Length = n
Surface area 2.0000936876064E+14
Volume 1.1699257679142E+21
Height 10131379.763198