21356988 is an even 8-digits composite number following 21356987
and preceding 21356989 . In scientific notation, it is written as 2.1356988 × 10^7.
The sum of its digits is 42. It has a total of 5 prime factors and 24 positive divisors.
There are 6597504 positive integers (up to 21356988) that are relatively prime to 21356988.
21356988 has 24 divisors, whose sum is 38859072
The reverse of 21356988 is 88965312
Previous prime number is 47
Is Prime? no Number parity even Number length 8 Sum of Digits 42 Digital Root 6
Name
twenty-one million three hundred fifty-six thousand nine hundred eighty-eight
Scientific notation
2.1356988 × 10^7
Engineering notation
2.1356988 × 10^6
Prime Factorization
2 × 2 × 57 × 47 × 1993
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
10678494 Product of the distinct prime numbers
The prime factorization of 21356988 is 2 × 2 × 57 × 47 × 1993.
Since it has a total of 5 prime factors.
6 , 4 , 55 , 57 , 216 , 800 , 2731 , 6207 , 45254 , 94180 , 363859 , 403031 , 4482731 , 3880449 , 46002511 , 18272585 , 692155008 , 968474041 , 2847025428 , 9623630612
n×2
42713976
n×3
64070964
n×4
85427952
n×5
106784940
n÷2
10678494
n÷3
7118996
n÷3
5339247
n÷5
4271397.6
n2
456120936432144
n3
9.7413693659301E+21
n4
2.0804630865174E+29
n5
4.4432425173194E+36
2 √n4621.3621368597
3 √n277.44697956271
4 √n67.980601180481
5 √n29.235330022558
1 , 2 , 4 , 47 , 57 , 94 , 114 , 188 , 228 , 1993 , 2679 , 3986 , 5358 , 7972 , 10716 , 93671 , 113601 , 187342 , 227202 , 374684 , 454404 , 5339247 , 10678494 , 21356988
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-21356987 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21356988 can be divided by 24 positive divisors.
The sum of these divisors (counting 21356988) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
1010001011110000110111100
3
Ternary
1111012001021120
4
Quaternary
1101132012330
5
Quinary
20431410423
6
Senary
2041430540
8
Octal
121360674
10
Decimal
21356988
12
Duodecimal
719b450
16
Hexadecimal
145e1bc
20
Vigesimal
6d9c98
36
Base36
cpr5o
md5
2dacebf32701146155c6dd058fefc2cd
sha1
79fee4f70355b94395518537fd6234ef772d9fc7
sha256
f356794ee94eb711fae43e36868770610f4da05b050048187355e8dccaf77e57
sha512
387b085c7eb1bc9573ada406b37fcbe0d2475e2372ed3dff1d8b0fc52f9e9b3bd4201f127d2832889f10c53c5d6134e2c652bd1d8e55aeb323a872687684e532
ripemd-160
317f7044c1019731fb5a7b417d5d61676b0a6eed
Diameter
42713976
Circumference
134189913.20721
Area
1.4329461830437E+15
Volume
4.0804552581214E+22
Surface area
5.7317847321749E+15
Circumference
134189913.20721
Perimeter
85427952
Area
456120936432144
Diagonal
30203342.081039
Surface area
2736725618592864
Volume
9.7413693659301E+21
Space diagonal
36991388.312639
Perimeter
64070964
Area
1.9750615907409E+14
Altitude
18495694.156319
Surface area
1.9750615907409E+14
Volume
1.1480313894487E+21
Height
10067780.69368