28778087 is an odd 8-digits composite number following 28778086
and preceding 28778088 . In scientific notation, it is written as 2.8778087 × 10^7.
The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors.
There are 26564376 positive integers (up to 28778087) that are relatively prime to 28778087.
28778087 has 4 divisors, whose sum is 30991800
The reverse of 28778087 is 78087782
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2
Name
twenty-eight million seven hundred seventy-eight thousand eighty-seven
Scientific notation
2.8778087 × 10^7
Engineering notation
2.8778087 × 10^6
Prime Factorization
13 × 2213699
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28778087
Product of the distinct prime numbers
The prime factorization of 28778087 is 13 × 2213699.
Since it has a total of 2 prime factors.
9 , 4 , 43 , 18 , 981 , 366 , 6263 , 18 , 6777 , 2219 , 779467 , 152679 , 3197177 , 4670026 , 31040728 , 95236300 , 249257500 , 557876622 , 7824368857 , 4346009260
n×2
57556174
n×3
86334261
n×4
115112348
n×5
143890435
n÷2
14389043.5
n÷3
9592695.6666667
n÷3
7194521.75
n÷5
5755617.4
n2
828178291379569
n3
2.3833386920833E+22
n4
6.8587928231238E+29
n5
1.9738293657883E+37
2 √n
5364.5211342673
3 √n
306.44601184973
4 √n
73.242891356549
5 √n
31.032187041322
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
-28778086
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 28778087 can be divided by 4 positive divisors.
The sum of these divisors (counting 28778087) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101101110001111001100111
3
Ternary
2000011002010002
4
Quaternary
1231301321213
5
Quinary
24331344322
6
Senary
2504451515
8
Octal
155617147
10
Decimal
28778087
12
Duodecimal
9779b9b
16
Hexadecimal
1b71e67
20
Vigesimal
8jh547
36
Base36
h4tbb
md5
52a15bb768944c06160e9fc995b8a937
sha1
096806a77e5cda6f5ca15565e6b70a1b38942eb9
sha256
3d07f389c3b6fa0697e7d829feb04f90ce91bd3481b6ab21add0600a8c2f1bee
sha512
2206a0a43b8f95502c6882dc1cb9f18d7cc48f0570f834ca2e6efb65be59dd7bab622ba3f0216ad52c40fd81a672eec7779781e47f3652409cf1b9257128b798
ripemd-160
7f0b3e65e363dd1dc5ec5d2e56b69d4d02b226e8
Diameter
57556174
Circumference
180818053.40714
Area
2.6017988360606E+15
Volume
9.9833057680868E+22
Surface area
1.0407195344242E+16
Circumference
180818053.40714
Perimeter
115112348
Area
828178291379569
Diagonal
40698360.934553
Surface area
4969069748277414
Volume
2.3833386920833E+22
Space diagonal
49845108.828637
Perimeter
86334261
Area
3.5861171959875E+14
Altitude
24922554.414319
Surface area
3.5861171959875E+14
Volume
2.8087915850606E+21
Height
13566120.311518