28571921 is an odd 8-digits composite number following 28571920
and preceding 28571922 . In scientific notation, it is written as 2.8571921 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 24490212 positive integers (up to 28571921) that are relatively prime to 28571921.
28571921 has 4 divisors, whose sum is 32653632
The reverse of 28571921 is 12917582
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty-eight million five hundred seventy-one thousand nine hundred twenty-one
Scientific notation
2.8571921 × 10^7
Engineering notation
2.8571921 × 10^6
Prime Factorization
7 × 4081703
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28571921
Product of the distinct prime numbers
The prime factorization of 28571921 is 7 × 4081703.
Since it has a total of 2 prime factors.
1 , 3 , 74 , 79 , 881 , 350 , 1958 , 8731 , 31831 , 6379 , 79716 , 156833 , 4329189 , 3091554 , 95397500 , 13294577 , 221578812 , 573996667 , 3210102924 , 2076320931
n×2
57143842
n×3
85715763
n×4
114287684
n×5
142859605
n÷2
14285960.5
n÷3
9523973.6666667
n÷3
7142980.25
n÷5
5714384.2
n2
816354669630241
n3
2.3324821128656E+22
n4
6.664349466271E+29
n5
1.9041326646669E+37
2 √n
5345.2709005251
3 √n
305.71246503081
4 √n
73.11135958608
5 √n
30.987596207053
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
-28571920
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 28571921 can be divided by 4 positive divisors.
The sum of these divisors (counting 28571921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101100111111100100010001
3
Ternary
1222202121022022
4
Quaternary
1230333210101
5
Quinary
24303300141
6
Senary
2500221225
8
Octal
154774421
10
Decimal
28571921
12
Duodecimal
969a815
16
Hexadecimal
1b3f911
20
Vigesimal
8ib9g1
36
Base36
h0e8h
md5
7a01a5dc4097d9775fd3f5c9af509c65
sha1
673a4cda45a8193f0e17cd255ce22043962f714c
sha256
7ada68db0630027fb9f4e4ab5edd8efa1d4e3347483c053debeff0028906c17d
sha512
104c4ee9e94293578fde020d566575cd8034e681d456f0f795878196a3c883ce5d321e0f2e098283400c07c56c5d855e4ee518a8bf1e58447e31f1400bfca247
ripemd-160
a605e2b7f34dbef11133b94e7d2e725ded53db90
Diameter
57143842
Circumference
179522674.2251
Area
2.5646538328341E+15
Volume
9.770278227211E+22
Surface area
1.0258615331336E+16
Circumference
179522674.2251
Perimeter
114287684
Area
816354669630241
Diagonal
40406798.181253
Surface area
4898128017781446
Volume
2.3324821128656E+22
Space diagonal
49488018.841844
Perimeter
85715763
Area
3.5349194119892E+14
Altitude
24744009.420922
Surface area
3.5349194119892E+14
Volume
2.7488565316727E+21
Height
13468932.727084