21897988 (number)

21897988 is an even 8-digits composite number following 21897987 and preceding 21897989. In scientific notation, it is written as 2.1897988 × 10^7. The sum of its digits is 52. It has a total of 4 prime factors and 12 positive divisors. There are 9384840 positive integers (up to 21897988) that are relatively prime to 21897988.

Interesting facts

Basic properties

Name

Name twenty-one million eight hundred ninety-seven thousand nine hundred eighty-eight

Notation

Scientific notation 2.1897988 × 10^7
Engineering notation 2.1897988 × 10^6

Prime Factorization of 21897988

Prime Factorization 2 × 2 × 7 × 782071

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10948994
Product of the distinct prime numbers

The prime factorization of 21897988 is 2 × 2 × 7 × 782071. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 5, 68, 16, 589, 692, 5552, 5864, 34391, 7570, 502498, 591142, 6139323, 3007543, 91207453, 46237457, 522945853, 755554051, 5752043834, 3349518609

Basic calculations (n = 21897988)

Multiplication

n×y
n×2 43795976
n×3 65693964
n×4 87591952
n×5 109489940

Division

n÷y
n÷2 10948994
n÷3 7299329.3333333
n÷3 5474497
n÷5 4379597.6

Exponentiation

ny
n2 479521878448144
n3 1.0500564339995E+22
n4 2.2994123191044E+29
n5 5.03525033708E+36

Nth Root

y√n
2√n 4679.5286087383
3√n 279.77016854269
4√n 68.407080106801
5√n 29.381965380261

Divisors of 21897988

1, 2, 4, 7, 14, 28, 782071, 1564142, 3128284, 5474497, 10948994, 21897988

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21897987
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21897988 can be divided by 12 positive divisors. The sum of these divisors (counting 21897988) is 1, the average is 0.083333333333333.

Base conversion 21897988

Base System Value
2 Binary 1010011100010001100000100
3 Ternary 1112012112101121
4 Quaternary 1103202030010
5 Quinary 21101213423
6 Senary 2101203324
8 Octal 123421404
10 Decimal 21897988
12 Duodecimal 7400544
16 Hexadecimal 14e2304
20 Vigesimal 6gh4j8
36 Base36 d1clg

Cryptographic Hash Functions

md5 21fe450d07feff3762f582197004f2db
sha1 972528a00d387a66f2e952f5c5521919337540e1
sha256 0e4125000aa8eff8e7a89d180749069427f7c17e81e7b6648fb72d5df496b906
sha512 07a7b16275a7d7041613d0080b681c65e4a4d6b8018b2fca339b3708f7b807f5a26f1724f1342b19a96f04098cb42ff4c54f74496bc57711397e1f219a7d2106
ripemd-160 d15a6a82639fb698e96a6604101b2fb651d098ab

21897988 as geometric shapes

Circle

Radius = n
Diameter 43795976
Circumference 137589116.45839
Area 1.5064624105683E+15

Sphere

Radius = n
Volume 4.39846610521E+22
Surface area 6.0258496422731E+15
Circumference 137589116.45839

Square

Length = n
Perimeter 87591952
Area 479521878448144
Diagonal 30968431.618283

Cube

Length = n
Surface area 2877131270688864
Volume 1.0500564339995E+22
Space diagonal 37928427.799534

Equilateral Triangle

Length = n
Perimeter 65693964
Area 2.0763906420326E+14
Altitude 18964213.899767

Triangular Pyramid

Length = n
Surface area 2.0763906420326E+14
Volume 1.2375033751827E+21
Height 10322810.539428