21357789 is an odd 8-digits composite number following 21357788
and preceding 21357790 . In scientific notation, it is written as 2.1357789 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 14205216 positive integers (up to 21357789) that are relatively prime to 21357789.
21357789 has 8 divisors, whose sum is 28543680
The reverse of 21357789 is 98775312
Previous prime number is 439
Is Prime? no Number parity odd Number length 8 Sum of Digits 42 Digital Root 6
Name
twenty-one million three hundred fifty-seven thousand seven hundred eighty-nine
Scientific notation
2.1357789 × 10^7
Engineering notation
2.1357789 × 10^6
Prime Factorization
3 × 439 × 16217
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
21357789 Product of the distinct prime numbers
The prime factorization of 21357789 is 3 × 439 × 16217.
Since it has a total of 3 prime factors.
5 , 2 , 49 , 12 , 979 , 965 , 2159 , 8484 , 51295 , 1355 , 388978 , 583069 , 8697281 , 356554 , 20689204 , 44115350 , 189498519 , 518687102 , 1936048252 , 4364235721
n×2
42715578
n×3
64073367
n×4
85431156
n×5
106788945
n÷2
10678894.5
n÷3
7119263
n÷3
5339447.25
n÷5
4271557.8
n2
456155150968521
n3
9.7424654656488E+21
n4
2.0807752175511E+29
n5
4.4440758052886E+36
2 √n4621.4487988076
3 √n277.4504480957
4 √n67.981238579534
5 √n29.235549315167
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-21357788 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 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
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21357789 can be divided by 8 positive divisors.
The sum of these divisors (counting 21357789) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001011110010011011101
3
Ternary
1111012002101020
4
Quaternary
1101132103131
5
Quinary
20431422124
6
Senary
2041434353
8
Octal
121362335
10
Decimal
21357789
12
Duodecimal
719b9b9
16
Hexadecimal
145e4dd
20
Vigesimal
6d9e99
36
Base36
cprrx
md5
a6685b43ec05a409dbeeb0e6d53de4a9
sha1
344e671cc167966062603444e73f523e7084d29b
sha256
ddc3753e263f9909dfaf934839f623c4d1ee40d4419a966e842452efbc2ac394
sha512
0c992548f58e8f37956e2c79bc9fd2e571e84bbe0dc20fc7eb1c6e1af14794eccf925738d9b9041617d5b87affcf22482af3e7224449a3281f0437062d05a0f9
ripemd-160
270cf2f552ba5f87968e8a6ba9847a069c12ba82
Diameter
42715578
Circumference
134194946.03864
Area
1.4330536711798E+15
Volume
4.0809143912979E+22
Surface area
5.7322146847194E+15
Circumference
134194946.03864
Perimeter
85431156
Area
456155150968521
Diagonal
30204474.866103
Surface area
2736930905811126
Volume
9.7424654656488E+21
Space diagonal
36992775.685336
Perimeter
64073367
Area
1.9752097440293E+14
Altitude
18496387.842668
Surface area
1.9752097440293E+14
Volume
1.1481605660393E+21
Height
10068158.288701