19978891 is an odd 8-digits prime number following 19978890
and preceding 19978892 . In scientific notation, it is written as 1.9978891 × 10^7.
The sum of its digits is 52. It has a total of 1 prime factors and 2 positive divisors.
There are 19978890 positive integers (up to 19978891) that are relatively prime to 19978891.
19978891 has 2 divisors, whose sum is 19978892
The reverse of 19978891 is 19887991
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 52 Digital Root 7
Name
nineteen million nine hundred seventy-eight thousand eight hundred ninety-one
Scientific notation
1.9978891 × 10^7
Engineering notation
1.9978891 × 10^6
Prime Factorization
19978891
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
19978891 Product of the distinct prime numbers
The prime factorization of 19978891 is 19978891.
Since it has a total of 1 prime factors.
6 , 2 , 37 , 43 , 309 , 464 , 1119 , 9672 , 44675 , 96456 , 367213 , 570046 , 5358198 , 6896921 , 41076256 , 70591727 , 295119891 , 140293999 , 3741662419 , 8964542941
n×2
39957782
n×3
59936673
n×4
79915564
n×5
99894455
n÷2
9989445.5
n÷3
6659630.3333333
n÷3
4994722.75
n÷5
3995778.2
n2
399156085589881
n3
7.9746959259869E+21
n4
1.5932558066344E+29
n5
3.1831484095865E+36
2 √n4469.7752739931
3 √n271.3462303063
4 √n66.856377960469
5 √n28.847904754642
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
19978892 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
9989446 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4469.7753858555 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999998998943 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 19978891 can be divided by 2 positive divisors.
The sum of these divisors (counting 19978891) is 19978892, the average is 9989446.
Base
System
Value
2
Binary
1001100001101101010001011
3
Ternary
1101121000212221
4
Quaternary
1030031222023
5
Quinary
20103311031
6
Senary
1552114511
8
Octal
114155213
10
Decimal
19978891
12
Duodecimal
6835a37
16
Hexadecimal
130da8b
20
Vigesimal
64h74b
36
Base36
bw7t7
md5
d731b82c27c61486d255603fa25f0dd7
sha1
d3511346115981ba34fa444f6ced19965b1443be
sha256
ef67f1267bd700a0a4bc36e83a76c38ca71aa5d2af8246ff457198e919c56460
sha512
15706d7d263dc9810507f48734dc8146c309df50df92ce0cfc425da3e610db00a05ad7552a044ccfbdbf77f5e7a3f05c907dee6822bbc726d15b88798dea3a77
ripemd-160
d108a968f2743a4361f59d125c5cef4ba19c5490
Diameter
39957782
Circumference
125531074.38494
Area
1.2539858261248E+15
Volume
3.3404328180924E+22
Surface area
5.0159433044993E+15
Circumference
125531074.38494
Perimeter
79915564
Area
399156085589881
Diagonal
28254418.613374
Surface area
2394936513539286
Volume
7.9746959259869E+21
Space diagonal
34604454.290881
Perimeter
59936673
Area
1.72839655098E+14
Altitude
17302227.14544
Surface area
1.72839655098E+14
Volume
9.3982692786101E+20
Height
9418139.5377913