21491370 (number)

21491370 is an even 8-digits composite number following 21491369 and preceding 21491371. In scientific notation, it is written as 2.1491370 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 32 positive divisors. There are 5545440 positive integers (up to 21491370) that are relatively prime to 21491370.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491370 × 10^7
Engineering notation 2.1491370 × 10^6

Prime Factorization of 21491370

Prime Factorization 2 × 5 × 9 × 31 × 7703

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21491370
Product of the distinct prime numbers

The prime factorization of 21491370 is 2 × 5 × 9 × 31 × 7703. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 8, 86, 36, 105, 277, 3659, 6700, 80119, 61361, 656366, 214304, 3156455, 4806899, 6484403, 6445488, 588294305, 58661758, 4751986510, 7375017054

Basic calculations (n = 21491370)

Multiplication

n×y
n×2 42982740
n×3 64474110
n×4 85965480
n×5 107456850

Division

n÷y
n÷2 10745685
n÷3 7163790
n÷3 5372842.5
n÷5 4298274

Exponentiation

ny
n2 461878984476900
n3 9.9264121506173E+21
n4 2.1333219630141E+29
n5 4.5848011636263E+36

Nth Root

y√n
2√n 4635.878557512
3√n 278.02767869608
4√n 68.08728631332
5√n 29.272028561195

Divisors of 21491370

1, 2, 5, 9, 10, 18, 31, 45, 62, 90, 155, 279, 310, 558, 1395, 2790, 7703, 15406, 38515, 69327, 77030, 138654, 238793, 346635, 477586, 693270, 1193965, 2149137, 2387930, 4298274, 10745685, 21491370

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491369
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491370 can be divided by 32 positive divisors. The sum of these divisors (counting 21491370) is 1, the average is 0.03125.

Base conversion 21491370

Base System Value
2 Binary 1010001111110111010101010
3 Ternary 1111102212121200
4 Quaternary 1101332322222
5 Quinary 21000210440
6 Senary 2044345030
8 Octal 121767252
10 Decimal 21491370
12 Duodecimal 7245176
16 Hexadecimal 147eeaa
20 Vigesimal 6e688a
36 Base36 csmui

Cryptographic Hash Functions

md5 f3983b43c8c9bed3019d01a30200dc62
sha1 b667b79f39520e878210e54c52d2bc3670c6a546
sha256 3a323dce05609425c4ed0ac648f46d0f541f341757458b7778c887f1b708aa46
sha512 ca9ad299937d0aa8a8c798a85aed0a5c39577171d4a4978dea96fd754c8867343e559b7d12d233f164e1a1ac45168be99c6107961b94260ff7b3622977e752b7
ripemd-160 e96f93d47299496c564e016be0c4ed5c3ba5e45c

21491370 as geometric shapes

Circle

Radius = n
Diameter 42982740
Circumference 135034260.21516
Area 1.4510356244801E+15

Sphere

Radius = n
Volume 4.1579657985178E+22
Surface area 5.8041424979206E+15
Circumference 135034260.21516

Square

Length = n
Perimeter 85965480
Area 461878984476900
Diagonal 30393386.927978

Cube

Length = n
Surface area 2771273906861400
Volume 9.9264121506173E+21
Space diagonal 37224144.764262

Equilateral Triangle

Length = n
Perimeter 64474110
Area 1.9999946701558E+14
Altitude 18612072.382131

Triangular Pyramid

Length = n
Surface area 1.9999946701558E+14
Volume 1.169838890759E+21
Height 10131128.975993