20921868 is an even 8-digits composite number following 20921867
and preceding 20921869 . In scientific notation, it is written as 2.0921868 × 10^7.
The sum of its digits is 36. It has a total of 5 prime factors and 24 positive divisors.
There are 6336000 positive integers (up to 20921868) that are relatively prime to 20921868.
20921868 has 24 divisors, whose sum is 48893040
The reverse of 20921868 is 86812902
Previous prime number is 1089
Is Prime? no Number parity even Number length 8 Sum of Digits 36 Digital Root 9
Name
twenty million nine hundred twenty-one thousand eight hundred sixty-eight
Scientific notation
2.0921868 × 10^7
Engineering notation
2.0921868 × 10^6
Prime Factorization
2 × 2 × 3 × 1089 × 1601
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
10460934 Product of the distinct prime numbers
The prime factorization of 20921868 is 2 × 2 × 3 × 1089 × 1601.
Since it has a total of 5 prime factors.
10 , 2 , 74 , 72 , 813 , 608 , 1032 , 4172 , 14514 , 85719 , 201571 , 943703 , 2064311 , 3626184 , 60463580 , 37694824 , 989347574 , 594516385 , 291109555 , 5375029665
n×2
41843736
n×3
62765604
n×4
83687472
n×5
104609340
n÷2
10460934
n÷3
6973956
n÷3
5230467
n÷5
4184373.6
n2
437724560609424
n3
9.1580154774284E+21
n4
1.9160279096071E+29
n5
4.0086883009116E+36
2 √n4574.0428506957
3 √n275.5498332675
4 √n67.631670470983
5 √n29.115221037681
1 , 2 , 3 , 4 , 6 , 12 , 1089 , 1601 , 2178 , 3202 , 3267 , 4356 , 4803 , 6404 , 6534 , 9606 , 13068 , 19212 , 1743489 , 3486978 , 5230467 , 6973956 , 10460934 , 20921868
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-20921867 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20921868 can be divided by 24 positive divisors.
The sum of these divisors (counting 20921868) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
1001111110011111000001100
3
Ternary
1110100221102000
4
Quaternary
1033303320030
5
Quinary
20323444433
6
Senary
2024232300
8
Octal
117637014
10
Decimal
20921868
12
Duodecimal
700b690
16
Hexadecimal
13f3e0c
20
Vigesimal
6af4d8
36
Base36
cgff0
md5
3ef61d7767c318e4a944a02e7f101f81
sha1
15eae2757c15c6fac40476b2761907f5304f585d
sha256
99946628d289e49d46fbd05ba19cd95fd70f2913cdab22af3dc3afc7c267b8cf
sha512
0b45bb86eac1d81014c8de89e0366b4b8d19ff8c4e4d0cf37c0b496c9b0f1b3b2b6693e5ce62f571e9d511a0ae1d5022b0d9122875b7a449a3e0ef3566bba1e5
ripemd-160
5db8879c3ba6245aec269e03a821bca96fb741b3
Diameter
41843736
Circumference
131455973.61635
Area
1.3751522639064E+15
Volume
3.8361005527134E+22
Surface area
5.5006090556255E+15
Circumference
131455973.61635
Perimeter
83687472
Area
437724560609424
Diagonal
29587989.47578
Surface area
2626347363656544
Volume
9.1580154774284E+21
Space diagonal
36237738.365249
Perimeter
62765604
Area
1.8954029467407E+14
Altitude
18118869.182625
Surface area
1.8954029467407E+14
Volume
1.0792824743835E+21
Height
9862663.1585932