81488761 is an odd 8-digits prime number following 81488760
and preceding 81488762 . In scientific notation, it is written as 8.1488761 × 10^7.
The sum of its digits is 43. It has a total of 1 prime factors and 2 positive divisors.
There are 81488760 positive integers (up to 81488761) that are relatively prime to 81488761.
81488761 has 2 divisors, whose sum is 81488762
The reverse of 81488761 is 16788418
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 43 Digital Root 7
Name
eighty-one million four hundred eighty-eight thousand seven hundred sixty-one
Scientific notation
8.1488761 × 10^7
Engineering notation
8.1488761 × 10^6
Prime Factorization
81488761
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81488761 Product of the distinct prime numbers
The prime factorization of 81488761 is 81488761.
Since it has a total of 1 prime factors.
2 , 9 , 1 , 54 , 760 , 150 , 4816 , 4346 , 54110 , 54550 , 322194 , 204470 , 3800126 , 2894017 , 41252967 , 99016571 , 593805597 , 131781268 , 8117799234 , 4899060201
n×2
162977522
n×3
244466283
n×4
325955044
n×5
407443805
n÷2
40744380.5
n÷3
27162920.333333
n÷3
20372190.25
n÷5
16297752.2
n2
6640418169315121
n3
5.4111944913938E+23
n4
4.409515346337E+31
n5
3.5932594218349E+39
2 √n9027.1125505335
3 √n433.54339237142
4 √n95.011118036436
5 √n38.213739868824
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81488762 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40744381 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9027.1126059222 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999754567 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81488761 can be divided by 2 positive divisors.
The sum of these divisors (counting 81488761) is 81488762, the average is 40744381.
Base
System
Value
2
Binary
100110110110110101101111001
3
Ternary
12200100001120021
4
Quaternary
10312312231321
5
Quinary
131330120021
6
Senary
12030330441
8
Octal
466665571
10
Decimal
81488761
12
Duodecimal
23359a21
16
Hexadecimal
4db6b79
20
Vigesimal
15961i1
36
Base36
1cil4p
md5
edb6488f6c0d80f48822d70c5aead717
sha1
a167ee1bc8d01a6553aa9bf19bd06a742cb228fa
sha256
0d947ae4c9e1a8f365c31bab8c1212198ee6d46fe9c2114193883099523e85e1
sha512
d141cfe9d2279f7f376003ceb5d6b193e59d55b02ebf63f796e6092c4ac03a02d005424d1b7b3df9c9281e02aa46b1be6eb68011666d0cab765cc07c680e7fe6
ripemd-160
e70e39a992e2653b60ec6d30267093793f142935
Diameter
162977522
Circumference
512008985.81547
Area
2.0861488937485E+16
Volume
2.2666358481744E+24
Surface area
8.3445955749938E+16
Circumference
512008985.81547
Perimeter
325955044
Area
6640418169315121
Diagonal
115242510.98718
Surface area
39842509015890726
Volume
5.4111944913938E+23
Space diagonal
141142674.29784
Perimeter
244466283
Area
2.8753854131893E+15
Altitude
70571337.148919
Surface area
2.8753854131893E+15
Volume
6.3771538653064E+22
Height
38414170.32906