28171921 is an odd 8-digits prime number following 28171920
and preceding 28171922 . In scientific notation, it is written as 2.8171921 × 10^7.
The sum of its digits is 31. It has a total of 1 prime factors and 2 positive divisors.
There are 28171920 positive integers (up to 28171921) that are relatively prime to 28171921.
28171921 has 2 divisors, whose sum is 28171922
The reverse of 28171921 is 12917182
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 31 Digital Root 4
Name
twenty-eight million one hundred seventy-one thousand nine hundred twenty-one
Scientific notation
2.8171921 × 10^7
Engineering notation
2.8171921 × 10^6
Prime Factorization
28171921
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28171921 Product of the distinct prime numbers
The prime factorization of 28171921 is 28171921.
Since it has a total of 1 prime factors.
6 , 6 , 66 , 13 , 754 , 877 , 5800 , 8767 , 29461 , 33732 , 226500 , 53980 , 5024968 , 5971868 , 74650163 , 50262491 , 581446480 , 311644252 , 2051611810 , 6846764488
n×2
56343842
n×3
84515763
n×4
112687684
n×5
140859605
n÷2
14085960.5
n÷3
9390640.3333333
n÷3
7042980.25
n÷5
5634384.2
n2
793657132830241
n3
2.235884604718E+22
n4
6.2989164449232E+29
n5
1.7745257647198E+37
2 √n5307.7227697008
3 √n304.27912167204
4 √n72.854119785368
5 √n30.900342442633
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28171922 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14085961 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5307.7228639031 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999290073 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28171921 can be divided by 2 positive divisors.
The sum of these divisors (counting 28171921) is 28171922, the average is 14085961.
Base
System
Value
2
Binary
1101011011101111010010001
3
Ternary
1222000021121111
4
Quaternary
1223131322101
5
Quinary
24203000141
6
Senary
2443453321
8
Octal
153357221
10
Decimal
28171921
12
Duodecimal
9527241
16
Hexadecimal
1adde91
20
Vigesimal
8g19g1
36
Base36
grtld
md5
07d45fdb89f9b8f1228d64de455cc746
sha1
4849f492ff3686933ddedb91e68a06559dab7629
sha256
1a734e2b8d128807dfe433237c753425df9083a30b98a4a75524d4c49ff0a029
sha512
fe5a178be7ce1187c4c9a61528a1efc2bba63c97aad2dc2ef767b56925e4ad5c55c82f4453c93d499bb836f240581347c612da59f2c871227b6689d8a74cec15
ripemd-160
e87b551ef38cf3bb61c02e91537a41bf03519055
Diameter
56343842
Circumference
177009400.10222
Area
2.4933474179686E+15
Volume
9.3656515312755E+22
Surface area
9.9733896718745E+15
Circumference
177009400.10222
Perimeter
112687684
Area
793657132830241
Diagonal
39841112.756303
Surface area
4761942796981446
Volume
2.235884604718E+22
Space diagonal
48795198.518817
Perimeter
84515763
Area
3.4366361946285E+14
Altitude
24397599.259408
Surface area
3.4366361946285E+14
Volume
2.6350152765778E+21
Height
13280370.918768