78312121 is an odd 8-digits composite number following 78312120
and preceding 78312122 . In scientific notation, it is written as 7.8312121 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 78230500 positive integers (up to 78312121) that are relatively prime to 78312121.
78312121 has 4 divisors, whose sum is 78393744
The reverse of 78312121 is 12121387
Previous prime number is 971
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
seventy-eight million three hundred twelve thousand one hundred twenty-one
Scientific notation
7.8312121 × 10^7
Engineering notation
7.8312121 × 10^6
Prime Factorization
971 × 80651
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
78312121
Product of the distinct prime numbers
The prime factorization of 78312121 is 971 × 80651.
Since it has a total of 2 prime factors.
6 , 5 , 56 , 28 , 255 , 353 , 7422 , 6409 , 81459 , 16905 , 389274 , 52208 , 7892699 , 306580 , 76181956 , 42009623 , 514991128 , 364082501 , 8833872127 , 6216345337
n×2
156624242
n×3
234936363
n×4
313248484
n×5
391560605
n÷2
39156060.5
n÷3
26104040.333333
n÷3
19578030.25
n÷5
15662424.2
n2
6132788295518641
n3
4.8027165906604E+23
n4
3.761109227765E+31
n5
2.9454044093895E+39
2 √n
8849.4135963916
3 √n
427.83501844303
4 √n
94.071321859489
5 √n
37.91104863075
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
-78312120
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 78312121 can be divided by 4 positive divisors.
The sum of these divisors (counting 78312121) is 1, the average is 0.25.
Base
System
Value
2
Binary
100101010101111001010111001
3
Ternary
12110100200000221
4
Quaternary
10222233022321
5
Quinary
130021441441
6
Senary
11434300041
8
Octal
452571271
10
Decimal
78312121
12
Duodecimal
22287621
16
Hexadecimal
4aaf2b9
20
Vigesimal
1499061
36
Base36
1ami0p
md5
afc86252ae65ded61a6eed02e8cfca20
sha1
f9467b28ff9bbe0efea8872ec091b2e8bc7b2670
sha256
ee5a4cc61f212dd030712fb0216ee1a8a7b20884d2d6852a34ee3a3e8aa251b2
sha512
5effd52f02b913c050e87e426af7bb9897bb5b345ea4a6768529e711d552604369fe1c48219314bd67a667d74dcafc9471ae49be84d57a0940a228fbcd77053d
ripemd-160
cb968fd28c07f35e90e99204e4e0250eb63d715b
Diameter
156624242
Circumference
492049568.04127
Area
1.9266722655223E+16
Volume
2.0117572211323E+24
Surface area
7.7066890620891E+16
Circumference
492049568.04127
Perimeter
313248484
Area
6132788295518641
Diagonal
110750063.6164
Surface area
36796729773111846
Volume
4.8027165906604E+23
Space diagonal
135640572.42048
Perimeter
234936363
Area
2.6555752299755E+15
Altitude
67820286.210241
Surface area
2.6555752299755E+15
Volume
5.6600557822885E+22
Height
36916687.872134