21690621 is an odd 8-digits composite number following 21690620
and preceding 21690622 . In scientific notation, it is written as 2.1690621 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 13792896 positive integers (up to 21690621) that are relatively prime to 21690621.
21690621 has 8 divisors, whose sum is 22341720
The reverse of 21690621 is 12609612
Previous prime number is 37
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million six hundred ninety thousand six hundred twenty-one
Scientific notation
2.1690621 × 10^7
Engineering notation
2.1690621 × 10^6
Prime Factorization
477 × 37 × 1229
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21690621
Product of the distinct prime numbers
The prime factorization of 21690621 is 477 × 37 × 1229.
Since it has a total of 3 prime factors.
6 , 3 , 99 , 2 , 777 , 128 , 3894 , 4547 , 9518 , 65103 , 906503 , 53184 , 5909335 , 2147566 , 2285530 , 31421924 , 588888624 , 153850663 , 2091053607 , 8039454688
n×2
43381242
n×3
65071863
n×4
86762484
n×5
108453105
n÷2
10845310.5
n÷3
7230207
n÷3
5422655.25
n÷5
4338124.2
n2
470483039365641
n3
1.0205069293808E+22
n4
2.2135429033073E+29
n5
4.8013120182879E+36
2 √n
4657.3190786116
3 √n
278.88425460561
4 √n
68.244553472139
5 √n
29.3261058103
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
-21690620
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 21690621 can be divided by 8 positive divisors.
The sum of these divisors (counting 21690621) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010101111100011111101
3
Ternary
1111210222221100
4
Quaternary
1102233203331
5
Quinary
21023044441
6
Senary
2052523313
8
Octal
122574375
10
Decimal
21690621
12
Duodecimal
7320539
16
Hexadecimal
14af8fd
20
Vigesimal
6fb6b1
36
Base36
cwwl9
md5
b9a9bab3f0cb6cdcf8a5fc6aff6e214a
sha1
4255922cf656eb3a34870765a8b41edcc44a8a3d
sha256
6bf8d7cddc68fd2b5599acde3f55de4cf72d5cd971417867598206195919a128
sha512
9f148169939dc1baa21fec378eff25b4727034e696f61186518c8ed8637381d30f70c2e43ec274166aa0683ed6cdbcbc4d2ec3bdc65281d1807dce461b941f3e
ripemd-160
8344d4dba97bd32cb02ac85c32747feb43ed7ac1
Diameter
43381242
Circumference
136286191.1708
Area
1.4780660601097E+15
Volume
4.274689429707E+22
Surface area
5.9122642404388E+15
Circumference
136286191.1708
Perimeter
86762484
Area
470483039365641
Diagonal
30675170.394495
Surface area
2822898236193846
Volume
1.0205069293808E+22
Space diagonal
37569257.61972
Perimeter
65071863
Area
2.0372513207018E+14
Altitude
18784628.80986
Surface area
2.0372513207018E+14
Volume
1.2026789500217E+21
Height
10225056.798165