28691245 is an odd 8-digits composite number following 28691244
and preceding 28691246 . In scientific notation, it is written as 2.8691245 × 10^7.
The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors.
There are 20866320 positive integers (up to 28691245) that are relatively prime to 28691245.
28691245 has 8 divisors, whose sum is 37559520
The reverse of 28691245 is 54219682
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-eight million six hundred ninety-one thousand two hundred forty-five
Scientific notation
2.8691245 × 10^7
Engineering notation
2.8691245 × 10^6
Prime Factorization
5 × 11 × 521659
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28691245
Product of the distinct prime numbers
The prime factorization of 28691245 is 5 × 11 × 521659.
Since it has a total of 3 prime factors.
5 , 9 , 18 , 78 , 624 , 40 , 1579 , 5400 , 7043 , 75271 , 468826 , 998103 , 5725011 , 9283674 , 1659050 , 81410318 , 221105454 , 257116915 , 6635432508 , 9147584117
n×2
57382490
n×3
86073735
n×4
114764980
n×5
143456225
n÷2
14345622.5
n÷3
9563748.3333333
n÷3
7172811.25
n÷5
5738249
n2
823187539650025
n3
2.3618275381046E+22
n4
6.7763772543506E+29
n5
1.94422700017E+37
2 √n
5356.4209132592
3 √n
306.13745302136
4 √n
73.187573489351
5 √n
31.013435579597
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
-28691244
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 28691245 can be divided by 8 positive divisors.
The sum of these divisors (counting 28691245) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101101011100101100101101
3
Ternary
1222222122222201
4
Quaternary
1231130230231
5
Quinary
24321104440
6
Senary
2502541501
8
Octal
155345455
10
Decimal
28691245
12
Duodecimal
9737891
16
Hexadecimal
1b5cb2d
20
Vigesimal
8j6825
36
Base36
h2yb1
md5
f6183e64b76655deb2711a695e049c27
sha1
e1f8554928ebb46b3671756187a3fe2087b4763f
sha256
594c86148f1d52fefd468619b2ffce3d18b640563f0b4e2c930d89b37ad39f96
sha512
84b93f1700b6e169ea5d380d3bb36ee4dda574c1e2998790d6decec30110a6d86b9d0e3c7c3bfd7dd609190e3432b9552ecaf862633d8a6cb80bffcc53fb938c
ripemd-160
4e52ec794503bfdcb87939548e39800e7e573355
Diameter
57382490
Circumference
180272409.02869
Area
2.5861199270912E+15
Volume
9.8932000570073E+22
Surface area
1.0344479708365E+16
Circumference
180272409.02869
Perimeter
114764980
Area
823187539650025
Diagonal
40575547.800369
Surface area
4939125237900150
Volume
2.3618275381046E+22
Space diagonal
49694694.072407
Perimeter
86073735
Area
3.5645066070787E+14
Altitude
24847347.036203
Surface area
3.5645066070787E+14
Volume
2.7834404469782E+21
Height
13525182.600123