21881331 is an odd 8-digits composite number following 21881330
and preceding 21881332 . In scientific notation, it is written as 2.1881331 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 13478400 positive integers (up to 21881331) that are relatively prime to 21881331.
21881331 has 8 divisors, whose sum is 24351600
The reverse of 21881331 is 13318812
Previous prime number is 779
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million eight hundred eighty-one thousand three hundred thirty-one
Scientific notation
2.1881331 × 10^7
Engineering notation
2.1881331 × 10^6
Prime Factorization
9 × 779 × 3121
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21881331
Product of the distinct prime numbers
The prime factorization of 21881331 is 9 × 779 × 3121.
Since it has a total of 3 prime factors.
8 , 3 , 48 , 46 , 25 , 602 , 2009 , 422 , 42661 , 37279 , 48858 , 345864 , 3272258 , 9210728 , 18391032 , 75440892 , 436102269 , 875786605 , 9578647851 , 3413485283
n×2
43762662
n×3
65643993
n×4
87525324
n×5
109406655
n÷2
10940665.5
n÷3
7293777
n÷3
5470332.75
n÷5
4376266.2
n2
478792646331561
n3
1.0476620374747E+22
n4
2.2924239818118E+29
n5
5.0161287938362E+36
2 √n
4677.7484968733
3 √n
279.69921356433
4 √n
68.394067702347
5 √n
29.377494061914
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
-21881330
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 21881331 can be divided by 8 positive divisors.
The sum of these divisors (counting 21881331) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011011110000111110011
3
Ternary
1112011200112200
4
Quaternary
1103132013303
5
Quinary
21100200311
6
Senary
2100554243
8
Octal
123360763
10
Decimal
21881331
12
Duodecimal
73b2983
16
Hexadecimal
14de1f3
20
Vigesimal
6gf36b
36
Base36
d0zqr
md5
e81f507fbc39404f3c7e90aa3aa0ef81
sha1
bdf500b307f70cbcf74ba888fcb59714a4025559
sha256
7d569a8da6b4a77827d67597624cf265eb785d54d70e757fe1f01000e9504220
sha512
b8a2ed58112aad26f9c61a2fff4630e56df3f231a328cd5d7a2fbb841f8eea0346b994500db2b031391b88db460b1a45ca7ee6aeed10f4958c524413db1d5be6
ripemd-160
f8e687912c053aa013c33bf5086bdf1dc8421fb6
Diameter
43762662
Circumference
137484457.44073
Area
1.504171460308E+15
Volume
4.3884364805005E+22
Surface area
6.0166858412322E+15
Circumference
137484457.44073
Perimeter
87525324
Area
478792646331561
Diagonal
30944875.062975
Surface area
2872755877989366
Volume
1.0476620374747E+22
Space diagonal
37899577.029232
Perimeter
65643993
Area
2.0732329743416E+14
Altitude
18949788.514616
Surface area
2.0732329743416E+14
Volume
1.2346815518168E+21
Height
10314958.354325