28172021 is an odd 8-digits composite number following 28172020
and preceding 28172022 . In scientific notation, it is written as 2.8172021 × 10^7.
The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors.
There are 27116208 positive integers (up to 28172021) that are relatively prime to 28172021.
28172021 has 8 divisors, whose sum is 29233920
The reverse of 28172021 is 12027182
Previous prime number is 367
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-eight million one hundred seventy-two thousand twenty-one
Scientific notation
2.8172021 × 10^7
Engineering notation
2.8172021 × 10^6
Prime Factorization
29 × 367 × 2647
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28172021
Product of the distinct prime numbers
The prime factorization of 28172021 is 29 × 367 × 2647.
Since it has a total of 3 prime factors.
10 , 2 , 51 , 29 , 461 , 92 , 9431 , 6478 , 98769 , 63188 , 449199 , 260338 , 8577491 , 4912103 , 44424427 , 13318567 , 362214645 , 78996314 , 7344967072 , 9402502463
n×2
56344042
n×3
84516063
n×4
112688084
n×5
140860105
n÷2
14086010.5
n÷3
9390673.6666667
n÷3
7043005.25
n÷5
5634404.2
n2
793662767224441
n3
2.2359084145165E+22
n4
6.2990058807836E+29
n5
1.7745572595256E+37
2 √n
5307.7321899282
3 √n
304.27948169809
4 √n
72.854184436642
5 √n
30.900364379581
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
-28172020
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 28172021 can be divided by 8 positive divisors.
The sum of these divisors (counting 28172021) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101011011101111011110101
3
Ternary
1222000021202012
4
Quaternary
1223131323311
5
Quinary
24203001041
6
Senary
2443454005
8
Octal
153357365
10
Decimal
28172021
12
Duodecimal
9527305
16
Hexadecimal
1addef5
20
Vigesimal
8g1a11
36
Base36
grto5
md5
143873fbda535c5c7861941847e7f87d
sha1
24f0de4a28d5b2813d03195f57f2539d97070d3d
sha256
5b3c613f8e889a0827b33d4f9b527259eca300670f54d268aaf8bc61c0950dce
sha512
4c9cd9bd0a17605f50633d6fbcf55f48760b48c934cb16ad50b1160382c131fdca551f88ca9a55988550df87297f5d6fabd5cf1402ce6b13bd88cdf001c9453b
ripemd-160
cb448bb1447ec670923e51fa8c5730171dfa10c7
Diameter
56344042
Circumference
177010028.42075
Area
2.49336511894E+15
Volume
9.3657512655262E+22
Surface area
9.9734604757602E+15
Circumference
177010028.42075
Perimeter
112688084
Area
793662767224441
Diagonal
39841254.17766
Surface area
4761976603346646
Volume
2.2359084145165E+22
Space diagonal
48795371.723897
Perimeter
84516063
Area
3.4366605922711E+14
Altitude
24397685.861949
Surface area
3.4366605922711E+14
Volume
2.6350433366945E+21
Height
13280418.05922