20921390 (number)

20921390 is an even 8-digits composite number following 20921389 and preceding 20921391. In scientific notation, it is written as 2.0921390 × 10^7. The sum of its digits is 26. It has a total of 4 prime factors and 16 positive divisors. There are 6750720 positive integers (up to 20921390) that are relatively prime to 20921390.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0921390 × 10^7
Engineering notation 2.0921390 × 10^6

Prime Factorization of 20921390

Prime Factorization 2 × 7 × 85 × 17581

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20921390
Product of the distinct prime numbers

The prime factorization of 20921390 is 2 × 7 × 85 × 17581. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 8, 99, 93, 577, 586, 2170, 8049, 41447, 29191, 66268, 302857, 4330952, 5793172, 763828, 22595347, 661384659, 649607843, 8864603900, 4105625849

Basic calculations (n = 20921390)

Multiplication

n×y
n×2 41842780
n×3 62764170
n×4 83685560
n×5 104606950

Division

n÷y
n÷2 10460695
n÷3 6973796.6666667
n÷3 5230347.5
n÷5 4184278

Exponentiation

ny
n2 437704559532100
n3 9.1573877947493E+21
n4 1.9158528143519E+29
n5 4.0082303911654E+36

Nth Root

y√n
2√n 4573.9905990284
3√n 275.54773476425
4√n 67.63128417403
5√n 29.115087997908

Divisors of 20921390

1, 2, 7, 14, 85, 170, 595, 1190, 17581, 35162, 123067, 246134, 1494385, 2988770, 10460695, 20921390

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 -20921389
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 20921390 can be divided by 16 positive divisors. The sum of these divisors (counting 20921390) is 1, the average is 0.0625.

Base conversion 20921390

Base System Value
2 Binary 1001111110011110000101110
3 Ternary 1110100220202022
4 Quaternary 1033303300232
5 Quinary 20323441030
6 Senary 2024230142
8 Octal 117636056
10 Decimal 20921390
12 Duodecimal 700b352
16 Hexadecimal 13f3c2e
20 Vigesimal 6af39a
36 Base36 cgf1q

Cryptographic Hash Functions

md5 647ab172e583ac6628043e6c36e29672
sha1 e165b06506a0ab09957e67c59d8768f5e0bd9af3
sha256 cc7f385c5f2967303c4f396201e34a45d11150d3dbdc431aeb52e5dbdd6004b9
sha512 82ac0a3b593e52713b75bad5b5c5273e56e34da10cf9c09520551941dfe15813903d1c4b46e1f241cd4c8ea701a8a19429c615de8b767a5d4da2981618ff5fe3
ripemd-160 9a503fd5022512c2ecae7bb2c32852f26544f2dd

20921390 as geometric shapes

Circle

Radius = n
Diameter 41842780
Circumference 131452970.25377
Area 1.3750894286688E+15

Sphere

Radius = n
Volume 3.8358376296076E+22
Surface area 5.5003577146752E+15
Circumference 131452970.25377

Square

Length = n
Perimeter 83685560
Area 437704559532100
Diagonal 29587313.481697

Cube

Length = n
Surface area 2626227357192600
Volume 9.1573877947493E+21
Space diagonal 36236910.444963

Equilateral Triangle

Length = n
Perimeter 62764170
Area 1.8953163395354E+14
Altitude 18118455.222482

Triangular Pyramid

Length = n
Surface area 1.8953163395354E+14
Volume 1.0792085012704E+21
Height 9862437.8272323