21356989 is an odd 8-digits prime number following 21356988
and preceding 21356990 . In scientific notation, it is written as 2.1356989 × 10^7.
The sum of its digits is 43. It has a total of 1 prime factors and 2 positive divisors.
There are 21356988 positive integers (up to 21356989) that are relatively prime to 21356989.
21356989 has 2 divisors, whose sum is 21356990
The reverse of 21356989 is 98965312
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 43 Digital Root 7
Name
twenty-one million three hundred fifty-six thousand nine hundred eighty-nine
Scientific notation
2.1356989 × 10^7
Engineering notation
2.1356989 × 10^6
Prime Factorization
21356989
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21356989 Product of the distinct prime numbers
The prime factorization of 21356989 is 21356989.
Since it has a total of 1 prime factors.
7 , 9 , 78 , 53 , 191 , 352 , 9374 , 998 , 29229 , 11950 , 424135 , 907051 , 7513066 , 3466360 , 15750044 , 86342302 , 611338933 , 269285672 , 8642822552 , 9004392610
n×2
42713978
n×3
64070967
n×4
85427956
n×5
106784945
n÷2
10678494.5
n÷3
7118996.3333333
n÷3
5339247.25
n÷5
4271397.8
n2
456120979146121
n3
9.7413707342929E+21
n4
2.0804634761722E+29
n5
4.4432435575511E+36
2 √n4621.3622450529
3 √n277.44698389302
4 √n67.980601976247
5 √n29.235330296336
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21356990 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10678495 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4621.3623532461 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999063538 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21356989 can be divided by 2 positive divisors.
The sum of these divisors (counting 21356989) is 21356990, the average is 10678495.
Base
System
Value
2
Binary
1010001011110000110111101
3
Ternary
1111012001021121
4
Quaternary
1101132012331
5
Quinary
20431410424
6
Senary
2041430541
8
Octal
121360675
10
Decimal
21356989
12
Duodecimal
719b451
16
Hexadecimal
145e1bd
20
Vigesimal
6d9c99
36
Base36
cpr5p
md5
9c8249ef6e5c985ec8eeab181ae9a6c4
sha1
663db8451c3c1bc46419b4ed3f117f0b342f0450
sha256
41ca7424859385013c7ec10d031636e006b14c6d85e63a07e7eb38d98ad88cdc
sha512
0651efec408712b5ead185dae93fd5e145b0c3c2205b17454e5498d90f9ced89fc77ecc9fa6f9d9d91bf61ccb78e66e303b1d11cc9fbefb83aafd7159a95581b
ripemd-160
8f91883d0b5a4bf490b973b93b771d88b4207530
Diameter
42713978
Circumference
134189919.4904
Area
1.4329463172336E+15
Volume
4.0804558312999E+22
Surface area
5.7317852689345E+15
Circumference
134189919.4904
Perimeter
85427956
Area
456120979146121
Diagonal
30203343.495253
Surface area
2736725874876726
Volume
9.7413707342929E+21
Space diagonal
36991390.04469
Perimeter
64070967
Area
1.9750617756979E+14
Altitude
18495695.022345
Surface area
1.9750617756979E+14
Volume
1.1480315507118E+21
Height
10067781.165084