21972521 is an odd 8-digits composite number following 21972520
and preceding 21972522 . In scientific notation, it is written as 2.1972521 × 10^7.
The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors.
There are 20338560 positive integers (up to 21972521) that are relatively prime to 21972521.
21972521 has 8 divisors, whose sum is 23668224
The reverse of 21972521 is 12527912
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty-one million nine hundred seventy-two thousand five hundred twenty-one
Scientific notation
2.1972521 × 10^7
Engineering notation
2.1972521 × 10^6
Prime Factorization
31 × 23 × 30817
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21972521
Product of the distinct prime numbers
The prime factorization of 21972521 is 31 × 23 × 30817.
Since it has a total of 3 prime factors.
8 , 4 , 5 , 87 , 595 , 32 , 3337 , 5944 , 16656 , 90387 , 620391 , 498613 , 7695523 , 2432702 , 50128441 , 56464310 , 885305731 , 577744061 , 9482093835 , 9795120309
n×2
43945042
n×3
65917563
n×4
87890084
n×5
109862605
n÷2
10986260.5
n÷3
7324173.6666667
n÷3
5493130.25
n÷5
4394504.2
n2
482791679095441
n3
1.060815030755E+22
n4
2.330878054038E+29
n5
5.1215266990788E+36
2 √n
4687.4855733111
3 √n
280.08722197658
4 √n
68.465214330426
5 √n
29.401939366974
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
-21972520
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 21972521 can be divided by 8 positive divisors.
The sum of these divisors (counting 21972521) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011110100011000101001
3
Ternary
1112100022122002
4
Quaternary
1103310120221
5
Quinary
21111110041
6
Senary
2102540345
8
Octal
123643051
10
Decimal
21972521
12
Duodecimal
74376b5
16
Hexadecimal
14f4629
20
Vigesimal
6h6b61
36
Base36
d2y3t
md5
8be96636b3673c221966805cc2d2b3a6
sha1
0204c8dc4b9f3977eba094a14604c4622266ecf9
sha256
ecbbb139e9e0fcbd442df21a26d5b0116544809b092acff4c94164111afbbdf1
sha512
cec3bcd6fb4b5932a86be572a77ff2fef3d1f6e612c37131d8febd5e84094f24fa3a617321353bbd6a84675726eeb93491695c198f8f095af58436f598c2b78f
ripemd-160
681b815e7c6feca055e13152923938e4975b67f9
Diameter
43945042
Circumference
138057421.10889
Area
1.5167347922605E+15
Volume
4.4435316099166E+22
Surface area
6.0669391690421E+15
Circumference
138057421.10889
Perimeter
87890084
Area
482791679095441
Diagonal
31073837.197728
Surface area
2896750074572646
Volume
1.060815030755E+22
Space diagonal
38057522.742374
Perimeter
65917563
Area
2.090549294162E+14
Altitude
19028761.371187
Surface area
2.090549294162E+14
Volume
1.2501825030524E+21
Height
10357945.732576