2215981 is an odd 7-digits composite number following 2215980
and preceding 2215982 . In scientific notation, it is written as 2.215981 × 10^6.
The sum of its digits is 28. It has a total of 4 prime factors and 12 positive divisors.
There are 2054360 positive integers (up to 2215981) that are relatively prime to 2215981.
2215981 has 12 divisors, whose sum is 2388960
The reverse of 2215981 is 1895122
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 28
Digital Root 1
Name
two million two hundred fifteen thousand nine hundred eighty-one
Scientific notation
2.215981 × 10^6
Engineering notation
2.215981 × 10^6
Prime Factorization
59 × 71 × 23 × 23
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
96347
Product of the distinct prime numbers
The prime factorization of 2215981 is 59 × 71 × 23 × 23.
Since it has a total of 4 prime factors.
6 , 1 , 10 , 49 , 612 , 407 , 8312 , 9585 , 24882 , 8761 , 533520 , 144940 , 7948283 , 1393900 , 14595303 , 95416087 , 203272532 , 366152918 , 832349636 , 8665721617
n×2
4431962
n×3
6647943
n×4
8863924
n×5
11079905
n÷2
1107990.5
n÷3
738660.33333333
n÷3
553995.25
n÷5
443196.2
n2
4910571792361
n3
1.0881733791008E+19
n4
2.4113715327932E+25
n5
5.3435535006105E+31
2 √n
1488.6171435262
3 √n
130.37330569412
4 √n
38.582601565034
5 √n
18.582887875525
1 , 23 , 59 , 71 , 529 , 1357 , 1633 , 4189 , 31211 , 37559 , 96347 , 2215981
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-2215980
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2215981 can be divided by 12 positive divisors.
The sum of these divisors (counting 2215981) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1000011101000000101101
3
Ternary
11011120202101
4
Quaternary
20131000231
5
Quinary
1031402411
6
Senary
115255101
8
Octal
10350055
10
Decimal
2215981
12
Duodecimal
8aa491
16
Hexadecimal
21d02d
20
Vigesimal
dgjj1
36
Base36
1bhv1
md5
c59da4e1dafaf2a72bf6e96fb1325b4a
sha1
85a335207b8c7bde8938678172c4bb0b76e665e7
sha256
1531b1b6060cc228055cffe834250a540286a103b28f099fe49f5f9a488671aa
sha512
bac60ce70bfcc98a5ba8b4ae5362bff9732da02f673f5eba47a1ede206beb314a458c5505b528bdee83615facb4bbf3bcd52a4647cc544135f511e6ad3b3f315
ripemd-160
222fb6dcf3e6d9b44e729d99ae2fb14b62ae5214
Diameter
4431962
Circumference
13923419.260189
Area
15427016267807
Volume
4.5581299914867E+19
Surface area
61708065071226
Circumference
13923419.260189
Perimeter
8863924
Area
4910571792361
Diagonal
3133870.3841611
Surface area
29463430754166
Volume
1.0881733791008E+19
Space diagonal
3838191.6806073
Perimeter
6647943
Area
2126339959646
Altitude
1919095.8403036
Surface area
2126339959646
Volume
1.2824246257814E+18
Height
1044623.461387