21091391 (number)

21091391 is an odd 8-digits composite number following 21091390 and preceding 21091392. In scientific notation, it is written as 2.1091391 × 10^7. The sum of its digits is 26. It has a total of 4 prime factors and 16 positive divisors. There are 19454688 positive integers (up to 21091391) that are relatively prime to 21091391.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1091391 × 10^7
Engineering notation 2.1091391 × 10^6

Prime Factorization of 21091391

Prime Factorization 23 × 109 × 47 × 179

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21091391
Product of the distinct prime numbers

The prime factorization of 21091391 is 23 × 109 × 47 × 179. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 1, 40, 57, 970, 664, 1254, 2458, 8081, 14698, 927371, 406909, 2414844, 6168494, 38784221, 22560260, 848895256, 152218548, 3487336567, 2091560424

Basic calculations (n = 21091391)

Multiplication

n×y
n×2 42182782
n×3 63274173
n×4 84365564
n×5 105456955

Division

n÷y
n÷2 10545695.5
n÷3 7030463.6666667
n÷3 5272847.75
n÷5 4218278.2

Exponentiation

ny
n2 444846774314881
n3 9.3824372521639E+21
n4 1.9788865261835E+29
n5 4.1737469468369E+36

Nth Root

y√n
2√n 4592.5364451466
3√n 276.29206200775
4√n 67.76825543827
5√n 29.162251063963

Divisors of 21091391

1, 23, 47, 109, 179, 1081, 2507, 4117, 5123, 8413, 19511, 117829, 193499, 448753, 917017, 21091391

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 -21091390
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 21091391 can be divided by 16 positive divisors. The sum of these divisors (counting 21091391) is 1, the average is 0.0625.

Base conversion 21091391

Base System Value
2 Binary 1010000011101010000111111
3 Ternary 1110200112221122
4 Quaternary 1100131100333
5 Quinary 20344411031
6 Senary 2032021155
8 Octal 120352077
10 Decimal 21091391
12 Duodecimal 70917bb
16 Hexadecimal 141d43f
20 Vigesimal 6bg89b
36 Base36 ck27z

Cryptographic Hash Functions

md5 e3858151cb95d7cf6a77cc3e0e216685
sha1 edcb771a8b5b41a024ce165e673dbd4dcdacd803
sha256 6e1a9a16e40461f50202fa0b2600b342edbaeeae88f6a5e36e32812c200f42b5
sha512 85117497f882b1a24781fcc07b845a8ef1fdb6876006c6311451a5cdcd11288595ed1a6aa890649ab5a9f2984ca1178e16442a3775998300e82ae93cb4b8277d
ripemd-160 e19bf0580b0b24a9a6aecb40a0c3b433edce01c4

21091391 as geometric shapes

Circle

Radius = n
Diameter 42182782
Circumference 132521118.03918
Area 1.3975273581607E+15

Sphere

Radius = n
Volume 3.9301061258887E+22
Surface area 5.590109432643E+15
Circumference 132521118.03918

Square

Length = n
Perimeter 84365564
Area 444846774314881
Diagonal 29827731.201514

Cube

Length = n
Surface area 2669080645889286
Volume 9.3824372521639E+21
Space diagonal 36531360.814301

Equilateral Triangle

Length = n
Perimeter 63274173
Area 1.9262430367412E+14
Altitude 18265680.40715

Triangular Pyramid

Length = n
Surface area 1.9262430367412E+14
Volume 1.1057308341771E+21
Height 9942577.0671713