21231681 is an odd 8-digits composite number following 21231680
and preceding 21231682 . In scientific notation, it is written as 2.1231681 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 13914432 positive integers (up to 21231681) that are relatively prime to 21231681.
21231681 has 8 divisors, whose sum is 28788960
The reverse of 21231681 is 18613212
Previous prime number is 59
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million two hundred thirty-one thousand six hundred eighty-one
Scientific notation
2.1231681 × 10^7
Engineering notation
2.1231681 × 10^6
Prime Factorization
3 × 59 × 119953
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21231681
Product of the distinct prime numbers
The prime factorization of 21231681 is 3 × 59 × 119953.
Since it has a total of 3 prime factors.
1 , 3 , 23 , 31 , 439 , 760 , 8898 , 1741 , 96277 , 13866 , 722771 , 167459 , 5356596 , 601654 , 82852699 , 39143646 , 405964214 , 685285931 , 1441187651 , 365097974
n×2
42463362
n×3
63695043
n×4
84926724
n×5
106158405
n÷2
10615840.5
n÷3
7077227
n÷3
5307920.25
n÷5
4246336.2
n2
450784278085761
n3
9.5709079921322E+21
n4
2.032064653693E+29
n5
4.3144148498585E+36
2 √n
4607.7848257053
3 √n
276.90329701432
4 √n
67.880666067042
5 √n
29.200942968365
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
-21231680
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 21231681 can be divided by 8 positive divisors.
The sum of these divisors (counting 21231681) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000111111100001000001
3
Ternary
1110221200101120
4
Quaternary
1100333201001
5
Quinary
20413403211
6
Senary
2035022453
8
Octal
120774101
10
Decimal
21231681
12
Duodecimal
713aa29
16
Hexadecimal
143f841
20
Vigesimal
6cdj41
36
Base36
cn2gx
md5
dcb682bca3473d297bf3352d5c4b162c
sha1
593bebe0fbf6f34367f8efe5f01ae36601316e49
sha256
fc3713cf297d7d1b46e25891fe3496cba0ee6362eb357e6e524152bffaa53f18
sha512
e9000b251907d737e57b72d04fc235e32ff4a082842bac363318efc3b3ec3343f93a6acd711249d2b55bde10f99b7d58eba6303317602034d7f2cdebc2e6ff3c
ripemd-160
6a86f8ae1dd2bd4fb37a23f4b7f131367dbdeba8
Diameter
42463362
Circumference
133402586.10592
Area
1.416180576388E+15
Volume
4.0090525648355E+22
Surface area
5.664722305552E+15
Circumference
133402586.10592
Perimeter
84926724
Area
450784278085761
Diagonal
30026131.222179
Surface area
2704705668514566
Volume
9.5709079921322E+21
Space diagonal
36774350.222095
Perimeter
63695043
Area
1.9519531822445E+14
Altitude
18387175.111047
Surface area
1.9519531822445E+14
Volume
1.1279423238915E+21
Height
10008710.407393