21493381 (number)

21493381 is an odd 8-digits composite number following 21493380 and preceding 21493382. In scientific notation, it is written as 2.1493381 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 16920000 positive integers (up to 21493381) that are relatively prime to 21493381.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1493381 × 10^7
Engineering notation 2.1493381 × 10^6

Prime Factorization of 21493381

Prime Factorization 7 × 13 × 251 × 941

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21493381
Product of the distinct prime numbers

The prime factorization of 21493381 is 7 × 13 × 251 × 941. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 3, 42, 62, 9, 534, 8725, 8089, 45788, 1710, 304503, 686741, 7783599, 127997, 40663302, 48644567, 300010304, 675116961, 2062022375, 3491848702

Basic calculations (n = 21493381)

Multiplication

n×y
n×2 42986762
n×3 64480143
n×4 85973524
n×5 107466905

Division

n÷y
n÷2 10746690.5
n÷3 7164460.3333333
n÷3 5373345.25
n÷5 4298676.2

Exponentiation

ny
n2 461965426811161
n3 9.9291989272799E+21
n4 2.1341205556882E+29
n5 4.5869466203338E+36

Nth Root

y√n
2√n 4636.0954476801
3√n 278.03635033534
4√n 68.088879030867
5√n 29.272576351739

Divisors of 21493381

1, 7, 13, 91, 251, 941, 1757, 3263, 6587, 12233, 22841, 85631, 236191, 1653337, 3070483, 21493381

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 -21493380
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 21493381 can be divided by 16 positive divisors. The sum of these divisors (counting 21493381) is 1, the average is 0.0625.

Base conversion 21493381

Base System Value
2 Binary 1010001111111011010000101
3 Ternary 1111102222101011
4 Quaternary 1101333122011
5 Quinary 21000242011
6 Senary 2044402221
8 Octal 121773205
10 Decimal 21493381
12 Duodecimal 7246371
16 Hexadecimal 147f685
20 Vigesimal 6e6d91
36 Base36 csoed

Cryptographic Hash Functions

md5 fb366f3f062186b1590e008322d6d194
sha1 68e157f266ac911224adef6e4db8774bd4d7d8cb
sha256 04c043fd34c323e1a340564563679ce4cb81cdef7fe8423bf28fdf832a1056fd
sha512 5671d7fd0e76bfb35108026b43d428ee8b3bff8d144593c814782da61c555fc3a42f8fd04cc999e69990d49bfdd917aa297e96a59cead2ab181cfc4b0516b640
ripemd-160 2f7e5dd4abb3e131ec74b87c8522c187de0d4e6d

21493381 as geometric shapes

Circle

Radius = n
Diameter 42986762
Circumference 135046895.70081
Area 1.4513071910824E+15

Sphere

Radius = n
Volume 4.1591331207966E+22
Surface area 5.8052287643297E+15
Circumference 135046895.70081

Square

Length = n
Perimeter 85973524
Area 461965426811161
Diagonal 30396230.911452

Cube

Length = n
Surface area 2771792560866966
Volume 9.9291989272799E+21
Space diagonal 37227627.918436

Equilateral Triangle

Length = n
Perimeter 64480143
Area 2.0003689764429E+14
Altitude 18613813.959218

Triangular Pyramid

Length = n
Surface area 2.0003689764429E+14
Volume 1.1701673155383E+21
Height 10132076.970484