21494891 (number)

21494891 is an odd 8-digits composite number following 21494890 and preceding 21494892. In scientific notation, it is written as 2.1494891 × 10^7. The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors. There are 19012320 positive integers (up to 21494891) that are relatively prime to 21494891.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-four thousand eight hundred ninety-one

Notation

Scientific notation 2.1494891 × 10^7
Engineering notation 2.1494891 × 10^6

Prime Factorization of 21494891

Prime Factorization 11 × 37 × 52813

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21494891
Product of the distinct prime numbers

The prime factorization of 21494891 is 11 × 37 × 52813. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 9, 50, 95, 982, 742, 2597, 3152, 68650, 80804, 488094, 552825, 8884996, 3039282, 21771345, 76555436, 584243800, 480456368, 6648542818, 6185014573

Basic calculations (n = 21494891)

Multiplication

n×y
n×2 42989782
n×3 64484673
n×4 85979564
n×5 107474455

Division

n÷y
n÷2 10747445.5
n÷3 7164963.6666667
n÷3 5373722.75
n÷5 4298978.2

Exponentiation

ny
n2 462030339101881
n3 9.931291777688E+21
n4 2.134720342506E+29
n5 4.5885581077649E+36

Nth Root

y√n
2√n 4636.2582973773
3√n 278.04286125542
4√n 68.090074881566
5√n 29.272987644389

Divisors of 21494891

1, 11, 37, 407, 52813, 580943, 1954081, 21494891

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21494890
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21494891 can be divided by 8 positive divisors. The sum of these divisors (counting 21494891) is 1, the average is 0.125.

Base conversion 21494891

Base System Value
2 Binary 1010001111111110001101011
3 Ternary 1111110001110002
4 Quaternary 1101333301223
5 Quinary 21000314031
6 Senary 2044413215
8 Octal 121776153
10 Decimal 21494891
12 Duodecimal 724720b
16 Hexadecimal 147fc6b
20 Vigesimal 6e6h4b
36 Base36 cspkb

Cryptographic Hash Functions

md5 915115b3e044c4a171cbf2b5b6869531
sha1 0f997245097334a18c09a37144f2f397f909ecb8
sha256 3391625704e0c3e2ec3aabe01b191e965fb9fc9d05603813ed3f83501ff9a19f
sha512 97ea0da413f492bf23dc5e39e08aa4841edc5f94f70598de945ccdd89263c1653ef6b58e21999d4ee9936097434892dece982001b903089d44d9231ac53dcad8
ripemd-160 836a4921c655cee47a63f06b530c713b0c561322

21494891 as geometric shapes

Circle

Radius = n
Diameter 42989782
Circumference 135056383.31063
Area 1.4515111190581E+15

Sphere

Radius = n
Volume 4.1600097719255E+22
Surface area 5.8060444762323E+15
Circumference 135056383.31063

Square

Length = n
Perimeter 85979564
Area 462030339101881
Diagonal 30398366.373931

Cube

Length = n
Surface area 2772182034611286
Volume 9.931291777688E+21
Space diagonal 37230243.315155

Equilateral Triangle

Length = n
Perimeter 64484673
Area 2.0006500549068E+14
Altitude 18615121.657577

Triangular Pyramid

Length = n
Surface area 2.0006500549068E+14
Volume 1.1704139603242E+21
Height 10132788.79131