28991917 is an odd 8-digits composite number following 28991916
and preceding 28991918 . In scientific notation, it is written as 2.8991917 × 10^7.
The sum of its digits is 46. It has a total of 2 prime factors and 4 positive divisors.
There are 28980256 positive integers (up to 28991917) that are relatively prime to 28991917.
28991917 has 4 divisors, whose sum is 29003580
The reverse of 28991917 is 71919982
Previous prime number is 3593
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
twenty-eight million nine hundred ninety-one thousand nine hundred seventeen
Scientific notation
2.8991917 × 10^7
Engineering notation
2.8991917 × 10^6
Prime Factorization
3593 × 8069
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28991917
Product of the distinct prime numbers
The prime factorization of 28991917 is 3593 × 8069.
Since it has a total of 2 prime factors.
6 , 7 , 4 , 76 , 79 , 884 , 9508 , 9742 , 46708 , 79654 , 880478 , 989749 , 703967 , 8721142 , 41910368 , 75856467 , 327390411 , 538760426 , 1881567837 , 2065994163
n×2
57983834
n×3
86975751
n×4
115967668
n×5
144959585
n÷2
14495958.5
n÷3
9663972.3333333
n÷3
7247979.25
n÷5
5798383.4
n2
840531251334889
n3
2.4368612274607E+22
n4
7.0649278447059E+29
n5
2.048258016847E+37
2 √n
5384.4142671232
3 √n
307.20313562089
4 √n
73.378568173025
5 √n
31.078166318336
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
-28991916
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 28991917 can be divided by 4 positive divisors.
The sum of these divisors (counting 28991917) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101110100110000110101101
3
Ternary
2000112221102201
4
Quaternary
1232212012231
5
Quinary
24410220132
6
Senary
2513221501
8
Octal
156460655
10
Decimal
28991917
12
Duodecimal
9861891
16
Hexadecimal
1ba61ad
20
Vigesimal
913jfh
36
Base36
h9eb1
md5
d976e6b38dd6d856ee69e0961c3f3333
sha1
997686150f44bd02a3a00bae11dc2d11d5f5600d
sha256
3d5729563ea73d6124a1322d0522d91ba3769dfb4d1b2b3f7bc92354f8e89667
sha512
41c4ed38420289ac8a3801a7dac23ef90b19bd10858ea46d97461b77baac144bcf2e25fc17c97746edf13cdaf9e4317e2476055f630c32c36233359c837884a5
ripemd-160
1470b4525226843bfa181783c80f03eebe8f2edd
Diameter
57983834
Circumference
182161586.92137
Area
2.6406068043063E+15
Volume
1.0207500440011E+23
Surface area
1.0562427217225E+16
Circumference
182161586.92137
Perimeter
115967668
Area
840531251334889
Diagonal
41000762.220595
Surface area
5043187508009334
Volume
2.4368612274607E+22
Space diagonal
50215473.25282
Perimeter
86975751
Area
3.6396070816537E+14
Altitude
25107736.62641
Surface area
3.6396070816537E+14
Volume
2.8718684979134E+21
Height
13666920.740198