81893977 is an odd 8-digits composite number following 81893976
and preceding 81893978 . In scientific notation, it is written as 8.1893977 × 10^7.
The sum of its digits is 52. It has a total of 2 prime factors and 4 positive divisors.
There are 74449060 positive integers (up to 81893977) that are relatively prime to 81893977.
81893977 has 4 divisors, whose sum is 89338896
The reverse of 81893977 is 77939818
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 52
Digital Root 7
Name
eighty-one million eight hundred ninety-three thousand nine hundred seventy-seven
Scientific notation
8.1893977 × 10^7
Engineering notation
8.1893977 × 10^6
Prime Factorization
11 × 7444907
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81893977
Product of the distinct prime numbers
The prime factorization of 81893977 is 11 × 7444907.
Since it has a total of 2 prime factors.
6 , 3 , 35 , 70 , 325 , 515 , 6837 , 1465 , 35403 , 57088 , 230342 , 823505 , 7660022 , 426048 , 76851083 , 53539393 , 775570596 , 639964317 , 7542958516 , 6766539635
n×2
163787954
n×3
245681931
n×4
327575908
n×5
409469885
n÷2
40946988.5
n÷3
27297992.333333
n÷3
20473494.25
n÷5
16378795.4
n2
6706623468876529
n3
5.4923206810783E+23
n4
4.4978798353285E+31
n5
3.6834926778316E+39
2 √n
9049.5291037711
3 √n
434.260825966
4 √n
95.129012944375
5 √n
38.251669295898
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
-81893976
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 81893977 can be divided by 4 positive divisors.
The sum of these divisors (counting 81893977) is 1, the average is 0.25.
Base
System
Value
2
Binary
100111000011001101001011001
3
Ternary
12201002122102021
4
Quaternary
10320121221121
5
Quinary
131431101402
6
Senary
12043134441
8
Octal
470315131
10
Decimal
81893977
12
Duodecimal
23514421
16
Hexadecimal
4e19a59
20
Vigesimal
15bgeih
36
Base36
1cr9sp
md5
4bb0a94ba8aa7e99032fb998b5f913e7
sha1
2d8b15be1712d577cc21ca129d53b61205382c89
sha256
230f35c2b7bfe0f3dca64960eb071cf471614ca9840343bd82483156c2953dfb
sha512
495d532f0d28bd42fd14761ddaa563b2222a713faa84ccab5ccc93e87af7b55d613ec59322675390fe4ad853392c0b971a50ca7dd9a9b212612b628619a96965
ripemd-160
dd0c5d729e736814304772e9bc2f5e780f74e3bf
Diameter
163787954
Circumference
514555033.0329
Area
2.1069479020215E+16
Volume
2.3006179070447E+24
Surface area
8.4277916080862E+16
Circumference
514555033.0329
Perimeter
327575908
Area
6706623468876529
Diagonal
115815572.95007
Surface area
40239740813259174
Volume
5.4923206810783E+23
Space diagonal
141844528.99788
Perimeter
245681931
Area
2.904053148832E+15
Altitude
70922264.498939
Surface area
2.904053148832E+15
Volume
6.472761996736E+22
Height
38605190.983357