21491869 (number)

21491869 is an odd 8-digits composite number following 21491868 and preceding 21491870. In scientific notation, it is written as 2.1491869 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors. There are 17359920 positive integers (up to 21491869) that are relatively prime to 21491869.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand eight hundred sixty-nine

Notation

Scientific notation 2.1491869 × 10^7
Engineering notation 2.1491869 × 10^6

Prime Factorization of 21491869

Prime Factorization 19 × 7 × 571 × 283

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21491869
Product of the distinct prime numbers

The prime factorization of 21491869 is 19 × 7 × 571 × 283. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 1, 18, 75, 240, 860, 2556, 5218, 70724, 14707, 777943, 940281, 5287024, 554208, 5933639, 33305522, 540891261, 654543831, 8547442869, 8300692861

Basic calculations (n = 21491869)

Multiplication

n×y
n×2 42983738
n×3 64475607
n×4 85967476
n×5 107459345

Division

n÷y
n÷2 10745934.5
n÷3 7163956.3333333
n÷3 5372967.25
n÷5 4298373.8

Exponentiation

ny
n2 461900433113161
n3 9.9271035995113E+21
n4 2.1335201011013E+29
n5 4.5853334521735E+36

Nth Root

y√n
2√n 4635.932376556
3√n 278.02983048596
4√n 68.087681533123
5√n 29.272164491167

Divisors of 21491869

1, 7, 19, 133, 283, 571, 1981, 3997, 5377, 10849, 37639, 75943, 161593, 1131151, 3070267, 21491869

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 -21491868
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 21491869 can be divided by 16 positive divisors. The sum of these divisors (counting 21491869) is 1, the average is 0.0625.

Base conversion 21491869

Base System Value
2 Binary 1010001111111000010011101
3 Ternary 1111102220022011
4 Quaternary 1101333002131
5 Quinary 21000214434
6 Senary 2044351221
8 Octal 121770235
10 Decimal 21491869
12 Duodecimal 7245511
16 Hexadecimal 147f09d
20 Vigesimal 6e69d9
36 Base36 csn8d

Cryptographic Hash Functions

md5 2bb8b42252f7af4fd20ad348be0ed1ba
sha1 6615bf0958093502e463b3a60e622a96d8e893d2
sha256 d15e7fe723f7a2a7122b7de087249fbe9f7d89af8be56342711131c68a4fb6db
sha512 e2166e892a0a4788edb3fd4b8679625dfac18224dcc909661b0065356c9de0eeeb5124162903b3eaf2bde5782b8c1f040b96ea5d9eb1e1246c453a65eef90371
ripemd-160 d337386930ee6ed1af92377f7401ad293a4849b9

21491869 as geometric shapes

Circle

Radius = n
Diameter 42983738
Circumference 135037395.52463
Area 1.4511030073583E+15

Sphere

Radius = n
Volume 4.1582554319533E+22
Surface area 5.804412029433E+15
Circumference 135037395.52463

Square

Length = n
Perimeter 85967476
Area 461900433113161
Diagonal 30394092.620546

Cube

Length = n
Surface area 2771402598678966
Volume 9.9271035995113E+21
Space diagonal 37225009.057615

Equilateral Triangle

Length = n
Perimeter 64475607
Area 2.0000875454752E+14
Altitude 18612504.528807

Triangular Pyramid

Length = n
Surface area 2.0000875454752E+14
Volume 1.1699203787926E+21
Height 10131364.206849