21397943 (number)

21397943 is an odd 8-digits composite number following 21397942 and preceding 21397944. In scientific notation, it is written as 2.1397943 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 17870496 positive integers (up to 21397943) that are relatively prime to 21397943.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred ninety-seven thousand nine hundred forty-three

Notation

Scientific notation 2.1397943 × 10^7
Engineering notation 2.1397943 × 10^6

Prime Factorization of 21397943

Prime Factorization 7 × 59 × 197 × 263

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21397943
Product of the distinct prime numbers

The prime factorization of 21397943 is 7 × 59 × 197 × 263. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 4, 85, 55, 523, 90, 2672, 5202, 86201, 42424, 178203, 97917, 8647415, 6967953, 55376134, 15820617, 646208252, 413290252, 4366163820, 6730880032

Basic calculations (n = 21397943)

Multiplication

n×y
n×2 42795886
n×3 64193829
n×4 85591772
n×5 106989715

Division

n÷y
n÷2 10698971.5
n÷3 7132647.6666667
n÷3 5349485.75
n÷5 4279588.6

Exponentiation

ny
n2 457871964631249
n3 9.7975182004775E+21
n4 2.0964673599528E+29
n5 4.486008906963E+36

Nth Root

y√n
2√n 4625.7910674824
3√n 277.6242140663
4√n 68.013168338803
5√n 29.246533995471

Divisors of 21397943

1, 7, 59, 197, 263, 413, 1379, 1841, 11623, 15517, 51811, 81361, 108619, 362677, 3056849, 21397943

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 -21397942
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 21397943 can be divided by 16 positive divisors. The sum of these divisors (counting 21397943) is 1, the average is 0.0625.

Base conversion 21397943

Base System Value
2 Binary 1010001101000000110110111
3 Ternary 1111021010110102
4 Quaternary 1101220012313
5 Quinary 20434213233
6 Senary 2042344315
8 Octal 121500667
10 Decimal 21397943
12 Duodecimal 71bb09b
16 Hexadecimal 14681b7
20 Vigesimal 6deeh3
36 Base36 cqmrb

Cryptographic Hash Functions

md5 7eb55f091194d477cbc09642a59f28a2
sha1 3ee1aa5fec07f4db69f0363cafa90a4d1270c868
sha256 3f634ae6d3e22f23a3294fc7ef97337d891c7eeb6ebafba583c08045c907fb73
sha512 7b73374c5a6b15a4e0c48b0cfc9560a6c503a7a2e35fed4dcbdbfe20cf9130f786ebbcaea7744def2682a36cc7db918c7dded893d71db6e2362ced4be6cc8dc6
ripemd-160 61e7ff70f220ddccd22ee60833f56cc0d58b6209

21397943 as geometric shapes

Circle

Radius = n
Diameter 42795886
Circumference 134447241.06147
Area 1.4384472003703E+15

Sphere

Radius = n
Volume 4.1039748269376E+22
Surface area 5.753788801481E+15
Circumference 134447241.06147

Square

Length = n
Perimeter 85591772
Area 457871964631249
Diagonal 30261261.197486

Cube

Length = n
Surface area 2747231787787494
Volume 9.7975182004775E+21
Space diagonal 37062324.453463

Equilateral Triangle

Length = n
Perimeter 64193829
Area 1.9826437652568E+14
Altitude 18531162.226731

Triangular Pyramid

Length = n
Surface area 1.9826437652568E+14
Volume 1.1546485930594E+21
Height 10087087.065829