21493881 (number)

21493881 is an odd 8-digits composite number following 21493880 and preceding 21493882. In scientific notation, it is written as 2.1493881 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 13521600 positive integers (up to 21493881) that are relatively prime to 21493881.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-three thousand eight hundred eighty-one

Notation

Scientific notation 2.1493881 × 10^7
Engineering notation 2.1493881 × 10^6

Prime Factorization of 21493881

Prime Factorization 9 × 41 × 31 × 1879

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21493881
Product of the distinct prime numbers

The prime factorization of 21493881 is 9 × 41 × 31 × 1879. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 9, 84, 80, 398, 217, 5905, 1527, 5462, 80405, 214886, 474924, 8357451, 3975054, 94673266, 88907833, 505562013, 801042394, 6648487682, 9472696758

Basic calculations (n = 21493881)

Multiplication

n×y
n×2 42987762
n×3 64481643
n×4 85975524
n×5 107469405

Division

n÷y
n÷2 10746940.5
n÷3 7164627
n÷3 5373470.25
n÷5 4298776.2

Exponentiation

ny
n2 461986920442161
n3 9.9298918915403E+21
n4 2.1343191465963E+29
n5 4.5874801752963E+36

Nth Root

y√n
2√n 4636.1493720544
3√n 278.03850630291
4√n 68.089275014898
5√n 29.272712543918

Divisors of 21493881

1, 9, 31, 41, 279, 369, 1271, 1879, 11439, 16911, 58249, 77039, 524241, 693351, 2388209, 21493881

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 -21493880
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 21493881 can be divided by 16 positive divisors. The sum of these divisors (counting 21493881) is 1, the average is 0.0625.

Base conversion 21493881

Base System Value
2 Binary 1010001111111100001111001
3 Ternary 1111110000001200
4 Quaternary 1101333201321
5 Quinary 21000301011
6 Senary 2044404413
8 Octal 121774171
10 Decimal 21493881
12 Duodecimal 7246709
16 Hexadecimal 147f879
20 Vigesimal 6e6ee1
36 Base36 csos9

Cryptographic Hash Functions

md5 082a49031e2d75678c1de43b781b91da
sha1 9e00d057a4a037b5fbf4e528f26c0dd988709ac2
sha256 003d8d107ea0fcd14e9e066096d41f9fae9ded30ae53d2033e34bab51242cf7f
sha512 543b23da8ea2ca6f1489318461a9b0af8db9f75a0abf75cb8631a060f188694b54b6e41d601a22fb1ecb0373cfc0109a55b176e749cd8f8946103ad630a7abcb
ripemd-160 a0fcbfc1096cf834b7945e4668fc837920a82bc0

21493881 as geometric shapes

Circle

Radius = n
Diameter 42987762
Circumference 135050037.29347
Area 1.4513747153157E+15

Sphere

Radius = n
Volume 4.1594233889872E+22
Surface area 5.8054988612627E+15
Circumference 135050037.29347

Square

Length = n
Perimeter 85975524
Area 461986920442161
Diagonal 30396938.018233

Cube

Length = n
Surface area 2771921522652966
Volume 9.9298918915403E+21
Space diagonal 37228493.943839

Equilateral Triangle

Length = n
Perimeter 64481643
Area 2.0004620465953E+14
Altitude 18614246.97192

Triangular Pyramid

Length = n
Surface area 2.0004620465953E+14
Volume 1.1702489821596E+21
Height 10132312.672744