21297978 (number)
21297978 is an even 8-digits composite number following 21297977 and preceding 21297979. In scientific notation, it is written as 2.1297978 × 10^7. The sum of its digits is 45. It has a total of 6 prime factors and 48 positive divisors. There are 6551280 positive integers (up to 21297978) that are relatively prime to 21297978.
Interesting facts
- 21297978 has 48 divisors, whose sum is 51551136
- The reverse of 21297978 is 87979212
- Previous prime number is 13
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 45
- Digital Root 9
Name
Name | twenty-one million two hundred ninety-seven thousand nine hundred seventy-eight |
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Notation
Scientific notation | 2.1297978 × 10^7 |
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Engineering notation | 2.1297978 × 10^6 |
Prime Factorization of 21297978
Prime Factorization 2 × 9 × 9 × 3 × 13 × 3371
Composite numberω | Distinct Factors | 5 | Total number of distinct prime factors |
---|---|---|---|
Ω | Total Factors | 6 | Total number of prime factors |
rad | Radical | 2366442 | Product of the distinct prime numbers |
The prime factorization of 21297978 is 2 × 9 × 9 × 3 × 13 × 3371. Since it has a total of 6 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21297978)
Multiplication
n×yn×2 | 42595956 |
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n×3 | 63893934 |
n×4 | 85191912 |
n×5 | 106489890 |
Division
n÷yn÷2 | 10648989 |
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n÷3 | 7099326 |
n÷3 | 5324494.5 |
n÷5 | 4259595.6 |
Exponentiation
nyn2 | 453603866888484 |
---|---|
n3 | 9.6608451777059E+21 |
n4 | 2.0575646805619E+29 |
n5 | 4.3821967300183E+36 |
Nth Root
y√n2√n | 4614.973239359 |
---|---|
3√n | 277.19121240485 |
4√n | 67.933594335638 |
5√n | 29.219156518337 |
Divisors of 21297978
48 divisors
τ | Total Divisors | 48 | Total number of the positive divisors of n |
---|---|---|---|
σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
s | Aliquot Sum | -21297977 | Sum of the proper positive divisors of n |
A | Arithmetic Mean | 0.020833333333333 | 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 | 48 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21297978 can be divided by 48 positive divisors. The sum of these divisors (counting 21297978) is 1, the average is 0.020833333333333.
Base conversion 21297978
Base | System | Value |
---|---|---|
2 | Binary | 1010001001111101100111010 |
3 | Ternary | 1111002001100000 |
4 | Quaternary | 1101033230322 |
5 | Quinary | 20423013403 |
6 | Senary | 2040253430 |
8 | Octal | 121175472 |
10 | Decimal | 21297978 |
12 | Duodecimal | 7171276 |
16 | Hexadecimal | 144fb3a |
20 | Vigesimal | 6d24ii |
36 | Base36 | cohmi |
Cryptographic Hash Functions
md5 | 656f4a042bbaa65df22272614b99f3bb |
---|---|
sha1 | 446219ae46703d490caa66ab46f77b86ab89f74d |
sha256 | f1224b358b1e033a0ebbe953296c80e8cc8d9aa8c8a65818429d90074f89852d |
sha512 | 995d10ba632ec6b3c2884fc67a59343ba36612f88c96b639906a5b6bca52d606e6ac754e8c319693c95a7be96874c6de79880fba739fd8ecb51e4cd528afb174 |
ripemd-160 | de0eb725abbeafa46c20061e22a8a6369bedcb81 |
21297978 as geometric shapes
Circle
Radius = nDiameter | 42595956 |
---|---|
Circumference | 133819142.44223 |
Area | 1.4250385758568E+15 |
Sphere
Radius = nVolume | 4.0467253650332E+22 |
---|---|
Surface area | 5.7001543034271E+15 |
Circumference | 133819142.44223 |
Square
Length = nPerimeter | 85191912 |
---|---|
Area | 453603866888484 |
Diagonal | 30119889.338724 |
Cube
Length = nSurface area | 2721623201330904 |
---|---|
Volume | 9.6608451777059E+21 |
Space diagonal | 36889179.994484 |
Equilateral Triangle
Length = nPerimeter | 63893934 |
---|---|
Area | 1.9641623599014E+14 |
Altitude | 18444589.997242 |
Triangular Pyramid
Length = nSurface area | 1.9641623599014E+14 |
---|---|
Volume | 1.1385415228582E+21 |
Height | 10039963.112908 |