28778891 is an odd 8-digits prime number following 28778890
and preceding 28778892 . In scientific notation, it is written as 2.8778891 × 10^7.
The sum of its digits is 50. It has a total of 1 prime factors and 2 positive divisors.
There are 28778890 positive integers (up to 28778891) that are relatively prime to 28778891.
28778891 has 2 divisors, whose sum is 28778892
The reverse of 28778891 is 19887782
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 50
Digital Root 5
Name
twenty-eight million seven hundred seventy-eight thousand eight hundred ninety-one
Scientific notation
2.8778891 × 10^7
Engineering notation
2.8778891 × 10^6
Prime Factorization
28778891
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
28778891
Product of the distinct prime numbers
The prime factorization of 28778891 is 28778891.
Since it has a total of 1 prime factors.
9 , 8 , 9 , 33 , 562 , 331 , 9785 , 5682 , 23038 , 9338 , 491673 , 11392 , 5549366 , 1378486 , 53118071 , 75670993 , 879726333 , 444531138 , 9616657172 , 4889939847
n×2
57557782
n×3
86336673
n×4
115115564
n×5
143894455
n÷2
14389445.5
n÷3
9592963.6666667
n÷3
7194722.75
n÷5
5755778.2
n2
828224567189881
n3
2.383538454268E+22
n4
6.8595593369687E+29
n5
1.9741051046665E+37
2 √n
5364.596070535
3 √n
306.44886564493
4 √n
73.243402914768
5 √n
31.032360434359
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
28778892
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
14389446
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
5364.5961637387
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999305046
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28778891 can be divided by 2 positive divisors.
The sum of these divisors (counting 28778891) is 28778892, the average is 14389446.
Base
System
Value
2
Binary
1101101110010000110001011
3
Ternary
2000011010012212
4
Quaternary
1231302012023
5
Quinary
24331411031
6
Senary
2504455335
8
Octal
155620613
10
Decimal
28778891
12
Duodecimal
977a54b
16
Hexadecimal
1b7218b
20
Vigesimal
8jh74b
36
Base36
h4txn
md5
023d84c2a9ab69673cc6d72f7785ac81
sha1
6119ac425a6971b8a881c419c56b27eae318ee7d
sha256
32b3ecb666c30024498a298142a5c25d73046cb9248c86de555ad59f55a09c00
sha512
12c248aa86bd56f929c3552b960e5fa27fe61ea0d4e190b61130753468b08448f7d3a406f55728a194077415fd73a1445b44d3588da3cf24f62dc5f34a04c998
ripemd-160
a508f715bb1270092674f0e5a5fb9977759e966f
Diameter
57557782
Circumference
180823105.08812
Area
2.6019442158063E+15
Volume
9.9841425299694E+22
Surface area
1.0407776863225E+16
Circumference
180823105.08812
Perimeter
115115564
Area
828224567189881
Diagonal
40699497.962257
Surface area
4969347403139286
Volume
2.383538454268E+22
Space diagonal
49846501.397487
Perimeter
86336673
Area
3.586317576124E+14
Altitude
24923250.698743
Surface area
3.586317576124E+14
Volume
2.809027007053E+21
Height
13566499.320752