81572379 is an odd 8-digits composite number following 81572378
and preceding 81572380 . In scientific notation, it is written as 8.1572379 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 46612776 positive integers (up to 81572379) that are relatively prime to 81572379.
81572379 has 8 divisors, whose sum is 124300800
The reverse of 81572379 is 97327518
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
eighty-one million five hundred seventy-two thousand three hundred seventy-nine
Scientific notation
8.1572379 × 10^7
Engineering notation
8.1572379 × 10^6
Prime Factorization
7 × 3 × 3884399
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81572379
Product of the distinct prime numbers
The prime factorization of 81572379 is 7 × 3 × 3884399.
Since it has a total of 3 prime factors.
2 , 4 , 57 , 24 , 553 , 360 , 1816 , 8987 , 57859 , 28060 , 48244 , 874459 , 4579164 , 5056049 , 8582883 , 51621565 , 375630135 , 427537620 , 9385287050 , 6436472272
n×2
163144758
n×3
244717137
n×4
326289516
n×5
407861895
n÷2
40786189.5
n÷3
27190793
n÷3
20393094.75
n÷5
16314475.8
n2
6654053015719641
n3
5.4278693448438E+23
n4
4.4276421536008E+31
n5
3.611733038299E+39
2 √n
9031.742855064
3 √n
433.69163219511
4 √n
95.035482084662
5 √n
38.221579098991
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
-81572378
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 81572379 can be divided by 8 positive divisors.
The sum of these divisors (counting 81572379) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111001011001000011011
3
Ternary
12200111022021020
4
Quaternary
10313023020123
5
Quinary
131340304004
6
Senary
12032213523
8
Octal
467131033
10
Decimal
81572379
12
Duodecimal
2339a2a3
16
Hexadecimal
4dcb21b
20
Vigesimal
159gaij
36
Base36
1ckdnf
md5
907398077be607ef630002347f324ca2
sha1
407b61c027e5e2e0ebb8717589c0902ab853cce1
sha256
4db458c01553748001fe373945d8c3219890e0e9f6d2132554ff497e2fc1f3c1
sha512
85f440b1175d0c7c6a42272ac0bbb27fb612ee7b0fed313f460be145021f9224e537fbe5c8449517ee705e65599689191ad435666966070c9117b735d26e66e6
ripemd-160
cd1f91aaa88b634a126c21914b1c865ac4c791d1
Diameter
163144758
Circumference
512534373.20448
Area
2.0904324070782E+16
Volume
2.2736205944542E+24
Surface area
8.3617296283127E+16
Circumference
512534373.20448
Perimeter
326289516
Area
6654053015719641
Diagonal
115360764.69684
Surface area
39924318094317846
Volume
5.4278693448438E+23
Space diagonal
141287504.92226
Perimeter
244717137
Area
2.8812894748708E+15
Altitude
70643752.461132
Surface area
2.8812894748708E+15
Volume
6.396805368556E+22
Height
38453588.232279