81445817 is an odd 8-digits prime number following 81445816
and preceding 81445818 . In scientific notation, it is written as 8.1445817 × 10^7.
The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors.
There are 81445816 positive integers (up to 81445817) that are relatively prime to 81445817.
81445817 has 2 divisors, whose sum is 81445818
The reverse of 81445817 is 71854418
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
eighty-one million four hundred forty-five thousand eight hundred seventeen
Scientific notation
8.1445817 × 10^7
Engineering notation
8.1445817 × 10^6
Prime Factorization
81445817
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81445817
Product of the distinct prime numbers
The prime factorization of 81445817 is 81445817.
Since it has a total of 1 prime factors.
10 , 10 , 65 , 21 , 124 , 341 , 4478 , 4850 , 68081 , 61366 , 368839 , 954180 , 4947579 , 2436671 , 75685500 , 60734148 , 911489457 , 257619808 , 515899807 , 9918581937
n×2
162891634
n×3
244337451
n×4
325783268
n×5
407229085
n÷2
40722908.5
n÷3
27148605.666667
n÷3
20361454.25
n÷5
16289163.4
n2
6633421106797489
n3
5.4026440154817E+23
n4
4.4002275580106E+31
n5
3.5838012844809E+39
2 √n
9024.7336248778
3 √n
433.46722089
4 √n
94.998598015328
5 √n
38.209711345471
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81445818
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40722909
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9024.7336802811
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999754438
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81445817 can be divided by 2 positive divisors.
The sum of these divisors (counting 81445817) is 81445818, the average is 40722909.
Base
System
Value
2
Binary
100110110101100001110111001
3
Ternary
12200020212122202
4
Quaternary
10312230032321
5
Quinary
131322231232
6
Senary
12025355545
8
Octal
466541671
10
Decimal
81445817
12
Duodecimal
23338bb5
16
Hexadecimal
4dac3b9
20
Vigesimal
1590eah
36
Base36
1chnzt
md5
f50f13bd508266094ee6da1720c3929a
sha1
eb4ea417235f47cef6e3ae4310df0851a557eab8
sha256
e36ab48ab20818d9073585566187627d5be90a98d92f675bb0eb24dfd05d0b7a
sha512
bc23c7401a3c1978e5a66dfeb6cca228d84117447f0119fbaa58ce43e4ec33a6926ce527be5cafabdecf101afc26a6ee699ebd12425849d243fa96108813e9f8
ripemd-160
bfd7b2eea7b1b7765b57a64bf04b7f68be7dd2fa
Diameter
162891634
Circumference
511739160.70564
Area
2.0839507017282E+16
Volume
2.2630542331997E+24
Surface area
8.335802806913E+16
Circumference
511739160.70564
Perimeter
325783268
Area
6633421106797489
Diagonal
115181778.99996
Surface area
39800526640784934
Volume
5.4026440154817E+23
Space diagonal
141068293.10796
Perimeter
244337451
Area
2.8723555962433E+15
Altitude
70534146.553978
Surface area
2.8723555962433E+15
Volume
6.3670770328067E+22
Height
38393926.333319