28776921 is an odd 8-digits composite number following 28776920
and preceding 28776922 . In scientific notation, it is written as 2.8776921 × 10^7.
The sum of its digits is 42. It has a total of 2 prime factors and 4 positive divisors.
There are 19184612 positive integers (up to 28776921) that are relatively prime to 28776921.
28776921 has 4 divisors, whose sum is 38369232
The reverse of 28776921 is 12967782
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty-eight million seven hundred seventy-six thousand nine hundred twenty-one
Scientific notation
2.8776921 × 10^7
Engineering notation
2.8776921 × 10^6
Prime Factorization
3 × 9592307
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28776921
Product of the distinct prime numbers
The prime factorization of 28776921 is 3 × 9592307.
Since it has a total of 2 prime factors.
1 , 5 , 54 , 38 , 387 , 424 , 5772 , 2420 , 12663 , 14246 , 588118 , 659916 , 3077693 , 862865 , 27933314 , 44984808 , 530983418 , 794798611 , 7300913326 , 8052486060
n×2
57553842
n×3
86330763
n×4
115107684
n×5
143884605
n÷2
14388460.5
n÷3
9592307
n÷3
7194230.25
n÷5
5755384.2
n2
828111182240241
n3
2.3830490070544E+22
n4
6.8576813015133E+29
n5
1.9734295305683E+37
2 √n
5364.4124561782
3 √n
306.44187304236
4 √n
73.242149450833
5 √n
31.031935571399
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
-28776920
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 28776921 can be divided by 4 positive divisors.
The sum of these divisors (counting 28776921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101101110001100111011001
3
Ternary
2000011000111220
4
Quaternary
1231301213121
5
Quinary
24331330141
6
Senary
2504442253
8
Octal
155614731
10
Decimal
28776921
12
Duodecimal
9779389
16
Hexadecimal
1b719d9
20
Vigesimal
8jh261
36
Base36
h4sex
md5
cc76983a6176fea56a9e72ea709548d0
sha1
bb47003155431c0e38e2d07ce6de630cc3f3863e
sha256
464b1d55ac8d5e4124dbc16fbc36edf48f2d0ec5a09910ef6f4a9c1ac20e6b29
sha512
18ef4e83d267452d4145d53235f97738ab6e89de10530d8f3f647f396cb3bdaaab2223a54ba6dd1642a3bafac1a53ea4c365639568aaf99a41d61b8307486b14
ripemd-160
697c20ad692689ab71876e6f36c4b3403c31ab45
Diameter
57553842
Circumference
180810727.21307
Area
2.6015880064815E+15
Volume
9.9820923382754E+22
Surface area
1.0406352025926E+16
Circumference
180810727.21307
Perimeter
115107684
Area
828111182240241
Diagonal
40696711.961539
Surface area
4968667093441446
Volume
2.3830490070544E+22
Space diagonal
49843089.257396
Perimeter
86330763
Area
3.5858266048901E+14
Altitude
24921544.628698
Surface area
3.5858266048901E+14
Volume
2.8084501879801E+21
Height
13565570.653846