28789021 is an odd 8-digits composite number following 28789020
and preceding 28789022 . In scientific notation, it is written as 2.8789021 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 28749532 positive integers (up to 28789021) that are relatively prime to 28789021.
28789021 has 4 divisors, whose sum is 28828512
The reverse of 28789021 is 12098782
Previous prime number is 743
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-eight million seven hundred eighty-nine thousand twenty-one
Scientific notation
2.8789021 × 10^7
Engineering notation
2.8789021 × 10^6
Prime Factorization
743 × 38747
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28789021
Product of the distinct prime numbers
The prime factorization of 28789021 is 743 × 38747.
Since it has a total of 2 prime factors.
10 , 1 , 27 , 24 , 224 , 33 , 2853 , 7632 , 2380 , 59349 , 34708 , 474848 , 5131076 , 4601977 , 73943786 , 56400287 , 393338993 , 846636750 , 5710708281 , 4852299506
n×2
57578042
n×3
86367063
n×4
115156084
n×5
143945105
n÷2
14394510.5
n÷3
9596340.3333333
n÷3
7197255.25
n÷5
5757804.2
n2
828807730138441
n3
2.3860563147918E+22
n4
6.8692225353723E+29
n5
1.9775819182451E+37
2 √n
5365.5401405637
3 √n
306.48481749178
4 √n
73.249847375702
5 √n
31.034544768423
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
-28789020
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 28789021 can be divided by 4 positive divisors.
The sum of these divisors (counting 28789021) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101101110100100100011101
3
Ternary
2000011122010001
4
Quaternary
1231310210131
5
Quinary
24332222041
6
Senary
2505014301
8
Octal
155644435
10
Decimal
28789021
12
Duodecimal
9784391
16
Hexadecimal
1b7491d
20
Vigesimal
8jicb1
36
Base36
h51r1
md5
809b395c65331e14582ed4a120e191ee
sha1
dffc505db190e207deb1e78b77c84ff4ca70c346
sha256
b1bd09cfd5b2606732dffce5004fe7d09a7adb9a369415c8471461e290875cb8
sha512
da8f58c6c72accb6c3186e981380e0a418f2f173c5f21c3de970efae6d95d7e71a1feae01b436ff1308717c044e34499eaeabefa00c7cf99a550acdb2fdced74
ripemd-160
da396d54edaae724e9c8c3345e3168db563c6d11
Diameter
57578042
Circumference
180886753.75528
Area
2.6037762762414E+15
Volume
9.9946893194686E+22
Surface area
1.0415105104965E+16
Circumference
180886753.75528
Perimeter
115156084
Area
828807730138441
Diagonal
40713823.945644
Surface area
4972846380830646
Volume
2.3860563147918E+22
Space diagonal
49864047.072167
Perimeter
86367063
Area
3.588842745764E+14
Altitude
24932023.536084
Surface area
3.588842745764E+14
Volume
2.8119943341371E+21
Height
13571274.648548