21995215 is an odd 8-digits composite number following 21995214
and preceding 21995216 . In scientific notation, it is written as 2.1995215 × 10^7.
The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors.
There are 15996480 positive integers (up to 21995215) that are relatively prime to 21995215.
21995215 has 4 divisors, whose sum is 22395184
The reverse of 21995215 is 51259912
Previous prime number is 55
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million nine hundred ninety-five thousand two hundred fifteen
Scientific notation
2.1995215 × 10^7
Engineering notation
2.1995215 × 10^6
Prime Factorization
55 × 399913
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21995215
Product of the distinct prime numbers
The prime factorization of 21995215 is 55 × 399913.
Since it has a total of 2 prime factors.
5 , 2 , 16 , 65 , 350 , 955 , 8982 , 750 , 13892 , 63609 , 535582 , 975428 , 1676685 , 4313994 , 86099622 , 80958075 , 456200902 , 800467565 , 8059571972 , 9797993642
n×2
43990430
n×3
65985645
n×4
87980860
n×5
109976075
n÷2
10997607.5
n÷3
7331738.3333333
n÷3
5498803.75
n÷5
4399043
n2
483789482896225
n3
1.0641053691041E+22
n4
2.34052263761E+29
n5
5.1480298626598E+36
2 √n
4689.9056493708
3 √n
280.18361680739
4 √n
68.482885813689
5 √n
29.408010332795
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
-21995214
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 21995215 can be divided by 4 positive divisors.
The sum of these divisors (counting 21995215) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010011111001111011001111
3
Ternary
1112101110202121
4
Quaternary
1103321323033
5
Quinary
21112321330
6
Senary
2103233411
8
Octal
123717317
10
Decimal
21995215
12
Duodecimal
7448867
16
Hexadecimal
14f9ecf
20
Vigesimal
6h980f
36
Base36
d3fm7
md5
f44f0a853a6b0828f955504aac5c4805
sha1
c37b71e547784b41415f75e91842ee1e7ec9e587
sha256
4d0cc115d7d313683d4f2b9bda1f9f90685cd807bcb3c65eeeaccf55dff1bfd2
sha512
bac33f4a8a0ab7c1fb79e46744f9a9de4c59e633ba16870993711e007043e28a3ffe48209f2e401b04906581d68370adf5c11b736c9e6de021fde988758789a8
ripemd-160
8c142e254257cd183a2d347f251b15de32d5674a
Diameter
43990430
Circumference
138200011.71626
Area
1.5198694853508E+15
Volume
4.457314146964E+22
Surface area
6.0794779414031E+15
Circumference
138200011.71626
Perimeter
87980860
Area
483789482896225
Diagonal
31105931.360312
Surface area
2902736897377350
Volume
1.0641053691041E+22
Space diagonal
38096829.903401
Perimeter
65985645
Area
2.0948699113593E+14
Altitude
19048414.951701
Surface area
2.0948699113593E+14
Volume
1.2540602039842E+21
Height
10368643.786771