21551830 is an even 8-digits composite number following 21551829
and preceding 21551831 . In scientific notation, it is written as 2.1551830 × 10^7.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 8620728 positive integers (up to 21551830) that are relatively prime to 21551830.
21551830 has 8 divisors, whose sum is 38793312
The reverse of 21551830 is 03815512
Previous prime number is 5
Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million five hundred fifty-one thousand eight hundred thirty
Scientific notation
2.1551830 × 10^7
Engineering notation
2.1551830 × 10^6
Prime Factorization
2 × 5 × 2155183
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21551830
Product of the distinct prime numbers
The prime factorization of 21551830 is 2 × 5 × 2155183.
Since it has a total of 3 prime factors.
5 , 5 , 9 , 88 , 833 , 188 , 4737 , 6300 , 43381 , 56638 , 273980 , 456583 , 2134769 , 8701244 , 29208832 , 75428191 , 723398171 , 717165560 , 9479071524 , 1470151119
n×2
43103660
n×3
64655490
n×4
86207320
n×5
107759150
n÷2
10775915
n÷3
7183943.3333333
n÷3
5387957.5
n÷5
4310366
n2
464481376348900
n3
1.0010423661238E+22
n4
2.1574294897497E+29
n5
4.6496553600072E+36
2 √n
4642.3948561061
3 √n
278.28815247448
4 √n
68.13512204514
5 √n
29.288479803534
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
-21551829
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 21551830 can be divided by 8 positive divisors.
The sum of these divisors (counting 21551830) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001101101011010110
3
Ternary
1111112221112221
4
Quaternary
1102031223112
5
Quinary
21004124310
6
Senary
2045532554
8
Octal
122155326
10
Decimal
21551830
12
Duodecimal
727415a
16
Hexadecimal
148dad6
20
Vigesimal
6edjba
36
Base36
ctxhy
md5
267d5cc1e4edefa697dc69ec76636806
sha1
760d5c6473252193f1066d7ad70e93678618bf02
sha256
9e7d9f0197ff07647777989a8e27f8a76563aad87f076aaeb611accb31a4d266
sha512
d8f162ec3a361f4414db58fae72dda7ecd910c887cfc3eb42c764f9da58d107e0e2e5f725d678b31bfc310930b75cce639c688acf47c76454807d59a6be18fb2
ripemd-160
4bdf311743483f4494364debabb214e92e6a938a
Diameter
43103660
Circumference
135414141.59883
Area
1.459211279667E+15
Volume
4.1931564577954E+22
Surface area
5.8368451186679E+15
Circumference
135414141.59883
Perimeter
86207320
Area
464481376348900
Diagonal
30478890.279959
Surface area
2786888258093400
Volume
1.0010423661238E+22
Space diagonal
37328864.556087
Perimeter
64655490
Area
2.0112633575145E+14
Altitude
18664432.278044
Surface area
2.0112633575145E+14
Volume
1.1797397422352E+21
Height
10159630.09332