12721661 is an odd 8-digits composite number following 12721660
and preceding 12721662 . In scientific notation, it is written as 1.2721661 × 10^7.
The sum of its digits is 26. It has a total of 3 prime factors and 8 positive divisors.
There are 11897280 positive integers (up to 12721661) that are relatively prime to 12721661.
12721661 has 8 divisors, whose sum is 13555584
The reverse of 12721661 is 16612721
Previous prime number is 163
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twelve million seven hundred twenty-one thousand six hundred sixty-one
Scientific notation
1.2721661 × 10^7
Engineering notation
1.2721661 × 10^6
Prime Factorization
17 × 163 × 4591
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
12721661
Product of the distinct prime numbers
The prime factorization of 12721661 is 17 × 163 × 4591.
Since it has a total of 3 prime factors.
6 , 10 , 35 , 18 , 114 , 752 , 1351 , 6689 , 27339 , 16344 , 145475 , 667442 , 7773179 , 7167890 , 32619446 , 30120952 , 937848339 , 671634416 , 1392541013 , 5071806120
n×2
25443322
n×3
38164983
n×4
50886644
n×5
63608305
n÷2
6360830.5
n÷3
4240553.6666667
n÷3
3180415.25
n÷5
2544332.2
n2
161840658598921
n3
2.0588819947122E+21
n4
2.6192398775733E+28
n5
3.3321081800168E+35
2 √n
3566.743753061
3 √n
233.4432242013
4 √n
59.722221601855
5 √n
26.35777605286
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
-12721660
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 12721661 can be divided by 8 positive divisors.
The sum of these divisors (counting 12721661) is 1, the average is 0.125.
Base
System
Value
2
Binary
110000100001110111111101
3
Ternary
212221022211122
4
Quaternary
300201313331
5
Quinary
11224043121
6
Senary
1132400325
8
Octal
60416775
10
Decimal
12721661
12
Duodecimal
43160a5
16
Hexadecimal
c21dfd
20
Vigesimal
3ja431
36
Base36
7ko3h
md5
ecaece8e316067b2fea7ead3311549e3
sha1
80428c51f35c15c8c0cc847c5b75d970d16dee59
sha256
7f3d4b277a6d74e075a1d563faf609a0152f7c5bd78d841d334aa947edaed935
sha512
eb4c9f9e9579042408648ea3585a10d26fbb73bed1f1a2e81f0ad8236cd99fcc11052e4c12252c2abc4861d0651b3d156db30f338d2e3ea8edab814aeae4ac5a
ripemd-160
ea16dff7ff97352463db89a0f3f582e562f0a9be
Diameter
25443322
Circumference
79932553.47812
Area
5.084374241065E+14
Volume
8.6242247322616E+21
Surface area
2.033749696426E+15
Circumference
79932553.47812
Perimeter
50886644
Area
161840658598921
Diagonal
17991145.522113
Surface area
971043951593526
Volume
2.0588819947122E+21
Space diagonal
22034563.208667
Perimeter
38164983
Area
70079060855935
Altitude
11017281.604334
Surface area
70079060855935
Volume
2.4264157002065E+20
Height
5997048.507371