28778821 is an odd 8-digits prime number following 28778820
and preceding 28778822 . In scientific notation, it is written as 2.8778821 × 10^7.
The sum of its digits is 43. It has a total of 1 prime factors and 2 positive divisors.
There are 28778820 positive integers (up to 28778821) that are relatively prime to 28778821.
28778821 has 2 divisors, whose sum is 28778822
The reverse of 28778821 is 12887782
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty-eight million seven hundred seventy-eight thousand eight hundred twenty-one
Scientific notation
2.8778821 × 10^7
Engineering notation
2.8778821 × 10^6
Prime Factorization
28778821
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
28778821
Product of the distinct prime numbers
The prime factorization of 28778821 is 28778821.
Since it has a total of 1 prime factors.
1 , 6 , 24 , 37 , 586 , 150 , 1048 , 1669 , 87099 , 4776 , 701478 , 602024 , 84753 , 1118825 , 64645907 , 70106924 , 982534932 , 152450706 , 7599190980 , 7358299307
n×2
57557642
n×3
86336463
n×4
115115284
n×5
143894105
n÷2
14389410.5
n÷3
9592940.3333333
n÷3
7194705.25
n÷5
5755764.2
n2
828220538150041
n3
2.3835210615944E+22
n4
6.8594925981354E+29
n5
1.9740810963256E+37
2 √n
5364.5895462747
3 √n
306.44861718228
4 √n
73.243358376543
5 √n
31.032345338104
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
28778822
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
14389411
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
5364.5896394785
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999305045
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28778821 can be divided by 2 positive divisors.
The sum of these divisors (counting 28778821) is 28778822, the average is 14389411.
Base
System
Value
2
Binary
1101101110010000101000101
3
Ternary
2000011010010021
4
Quaternary
1231302011011
5
Quinary
24331410241
6
Senary
2504455141
8
Octal
155620505
10
Decimal
28778821
12
Duodecimal
977a4b1
16
Hexadecimal
1b72145
20
Vigesimal
8jh711
36
Base36
h4tvp
md5
144bf3f9c4e049435ea11a7719fc856f
sha1
456afefeaf0ab5e7651d072c3af9a8514665559e
sha256
c207f961e811c5ef6ffae4536d878f0e525905f7b8bfdbf016828ae54369c4ba
sha512
4c0168c7c462a99855c5c5bc0acdc8cd4b2beb298204511191a27bdc8a000997d5ac3a312b06b944790d0a4903626b4995161d8736d5c6fa979172342321e341
ripemd-160
3f4eb95e457b67bd5671ea9d39c99b3b606dbc79
Diameter
57557642
Circumference
180822665.26515
Area
2.6019315582044E+15
Volume
9.9840696757086E+22
Surface area
1.0407726232817E+16
Circumference
180822665.26515
Perimeter
115115284
Area
828220538150041
Diagonal
40699398.967308
Surface area
4969323228900246
Volume
2.3835210615944E+22
Space diagonal
49846380.15393
Perimeter
86336463
Area
3.5863001298698E+14
Altitude
24923190.076965
Surface area
3.5863001298698E+14
Volume
2.8090065095906E+21
Height
13566466.322436