20992721 is an odd 8-digits composite number following 20992720
and preceding 20992722 . In scientific notation, it is written as 2.0992721 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 20079972 positive integers (up to 20992721) that are relatively prime to 20992721.
20992721 has 4 divisors, whose sum is 21905472
The reverse of 20992721 is 12729902
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty million nine hundred ninety-two thousand seven hundred twenty-one
Scientific notation
2.0992721 × 10^7
Engineering notation
2.0992721 × 10^6
Prime Factorization
23 × 912727
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20992721
Product of the distinct prime numbers
The prime factorization of 20992721 is 23 × 912727.
Since it has a total of 2 prime factors.
6 , 1 , 21 , 55 , 254 , 954 , 5572 , 2873 , 97660 , 85403 , 487592 , 556697 , 2217580 , 9589433 , 8588309 , 16593610 , 903798617 , 62882457 , 4962342513 , 4338398310
n×2
41985442
n×3
62978163
n×4
83970884
n×5
104963605
n÷2
10496360.5
n÷3
6997573.6666667
n÷3
5248180.25
n÷5
4198544.2
n2
440694334983841
n3
9.2513732205963E+21
n4
1.9421149688685E+29
n5
4.077027769138E+36
2 √n
4581.7814221108
3 √n
275.86053743205
4 √n
67.688857444271
5 √n
29.134914422348
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20992720
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20992721 can be divided by 4 positive divisors.
The sum of these divisors (counting 20992721) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000101001011010001
3
Ternary
1110111112121012
4
Quaternary
1100011023101
5
Quinary
20333231341
6
Senary
2025540305
8
Octal
120051321
10
Decimal
20992721
12
Duodecimal
7044695
16
Hexadecimal
14052d1
20
Vigesimal
6b41g1
36
Base36
chy35
md5
4f1af8f9767228901639cba27a5c7d79
sha1
ae04bedef93c95c64a7b861c3237afda05a115fd
sha256
75518665fcbc95d74c049789e8fe839f3378e4bdbc249c2c4b449e1c437df73a
sha512
7cb2d8a7b03a576351de77b67ed1a0cfcca834aea14d58d441d1c937b05c94f125270c1bb7090a6069972626f4237dbd7bb2d54ab76efd2cb256cf21fcd710b9
ripemd-160
bcf6246e1de994928e4b048dce5b9798f04559c0
Diameter
41985442
Circumference
131901156.14492
Area
1.3844820852639E+15
Volume
3.8752061527257E+22
Surface area
5.5379283410555E+15
Circumference
131901156.14492
Perimeter
83970884
Area
440694334983841
Diagonal
29688190.749314
Surface area
2644166009903046
Volume
9.2513732205963E+21
Space diagonal
36360459.361118
Perimeter
62978163
Area
1.9082624469995E+14
Altitude
18180229.680559
Surface area
1.9082624469995E+14
Volume
1.0902847899285E+21
Height
9896063.5831048