207681921 is an odd 9-digits composite number following 207681920
and preceding 207681922 . In scientific notation, it is written as 2.07681921 × 10^8.
The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors.
There are 138454596 positive integers (up to 207681921) that are relatively prime to 207681921.
207681921 has 4 divisors, whose sum is 215373872
The reverse of 207681921 is 129186702
Previous prime number is 27
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 36
Digital Root 9
Name
two hundred seven million six hundred eighty-one thousand nine hundred twenty-one
Scientific notation
2.07681921 × 10^8
Engineering notation
2.07681921 × 10^6
Prime Factorization
27 × 7691923
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
207681921
Product of the distinct prime numbers
The prime factorization of 207681921 is 27 × 7691923.
Since it has a total of 2 prime factors.
6 , 8 , 15 , 38 , 145 , 342 , 6911 , 1026 , 38130 , 21227 , 555934 , 856756 , 5799584 , 6343881 , 29082786 , 7229144 , 275531935 , 708855363 , 6440982611 , 1643836862
n×2
415363842
n×3
623045763
n×4
830727684
n×5
1038409605
n÷2
103840960.5
n÷3
69227307
n÷3
51920480.25
n÷5
41536384.2
n2
43131780310250241
n3
8.9576909909827E+24
n4
1.8603504727317E+33
n5
3.8636115991018E+41
2 √n
14411.173477549
3 √n
592.19703787081
4 √n
120.04654712881
5 √n
46.07652716704
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
-207681920
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 207681921 can be divided by 4 positive divisors.
The sum of these divisors (counting 207681921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1100011000001111100110000001
3
Ternary
112110210100001000
4
Quaternary
30120033212001
5
Quinary
411131310141
6
Senary
32335202213
8
Octal
1430174601
10
Decimal
207681921
12
Duodecimal
59676369
16
Hexadecimal
c60f981
20
Vigesimal
34i04g1
36
Base36
3fnce9
md5
6a0f621d57ab8441a18f0acd8604636c
sha1
5a72f854b4c03b13e191842e3909bc97bebbc2cf
sha256
af7afdac51cf959d95b02edf7b7b4709a528cb1b0b4155c39cfffcc312caf077
sha512
072b85157f71823e6e03eae0e015df4682a230a3d35c2553e1315c2bcd0d3cace12b627547855ca8ab5d0b20f254ec4317c4a1abf7b5c44af152cb5a0bd5077d
ripemd-160
8d30bf09ae2a26a5b09d4c076c109d9eb901282d
Diameter
415363842
Circumference
1304903994.594
Area
1.3550248415893E+17
Volume
3.7521888280532E+25
Surface area
5.4200993663572E+17
Circumference
1304903994.594
Perimeter
830727684
Area
43131780310250241
Diagonal
293706589.3379
Surface area
258790681861501446
Volume
8.9576909909827E+24
Space diagonal
359715638.98551
Perimeter
623045763
Area
1.8676608729563E+16
Altitude
179857819.49275
Surface area
1.8676608729563E+16
Volume
1.0556740072496E+24
Height
97902196.445966