20931489 is an odd 8-digits composite number following 20931488
and preceding 20931490 . In scientific notation, it is written as 2.0931489 × 10^7.
The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors.
There are 13717464 positive integers (up to 20931489) that are relatively prime to 20931489.
20931489 has 4 divisors, whose sum is 20971440
The reverse of 20931489 is 98413902
Previous prime number is 531
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty million nine hundred thirty-one thousand four hundred eighty-nine
Scientific notation
2.0931489 × 10^7
Engineering notation
2.0931489 × 10^6
Prime Factorization
531 × 39419
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20931489
Product of the distinct prime numbers
The prime factorization of 20931489 is 531 × 39419.
Since it has a total of 2 prime factors.
2 , 2 , 26 , 74 , 920 , 644 , 9759 , 4383 , 22192 , 1072 , 335670 , 754664 , 689558 , 3140382 , 89299836 , 63427974 , 725253760 , 804243457 , 9797724637 , 5106622512
n×2
41862978
n×3
62794467
n×4
83725956
n×5
104657445
n÷2
10465744.5
n÷3
6977163
n÷3
5232872.25
n÷5
4186297.8
n2
438127231757121
n3
9.1706553321246E+21
n4
1.9195547120716E+29
n5
4.0179138340624E+36
2 √n
4575.0944252551
3 √n
275.59206433855
4 √n
67.639444300312
5 √n
29.117898294135
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
-20931488
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 20931489 can be divided by 4 positive divisors.
The sum of these divisors (counting 20931489) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111110110001110100001
3
Ternary
1110101102121100
4
Quaternary
1033312032201
5
Quinary
20324301424
6
Senary
2024345013
8
Octal
117661641
10
Decimal
20931489
12
Duodecimal
7015169
16
Hexadecimal
13f63a1
20
Vigesimal
6ag8e9
36
Base36
cgmu9
md5
0c1338c8d85045106040172a9064a594
sha1
a90d776d00e2f82b322a2d7157c318c727ef39fa
sha256
3122940fd6b34acb20798ad49391d4b68ba4b475774bdfe09af732b9a7b2fa44
sha512
2b5b10cec9f9a910580567729aecf2128b899c9924d86389d61cd82c1986c2a4f88d2f195dd23c36751ae935133c8ff8d01b79003a1878883309669b3e08dedd
ripemd-160
64c66d2f29d80442d4375c906518f38cf359ae4b
Diameter
41862978
Circumference
131516424.14219
Area
1.3764172926258E+15
Volume
3.8413951226676E+22
Surface area
5.5056691705032E+15
Circumference
131516424.14219
Perimeter
83725956
Area
438127231757121
Diagonal
29601595.624463
Surface area
2628763390542726
Volume
9.1706553321246E+21
Space diagonal
36254402.426069
Perimeter
62794467
Area
1.8971465639571E+14
Altitude
18127201.213035
Surface area
1.8971465639571E+14
Volume
1.080772095545E+21
Height
9867198.5414878