388889281 is an odd 9-digits composite number following 388889280
and preceding 388889282 . In scientific notation, it is written as 3.88889281 × 10^8.
The sum of its digits is 55. It has a total of 2 prime factors and 4 positive divisors.
There are 353535600 positive integers (up to 388889281) that are relatively prime to 388889281.
388889281 has 4 divisors, whose sum is 392103364
The reverse of 388889281 is 182988883
Previous prime number is 121
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 55
Digital Root 1
Name
three hundred eighty-eight million eight hundred eighty-nine thousand two hundred eighty-one
Scientific notation
3.88889281 × 10^8
Engineering notation
3.88889281 × 10^6
Prime Factorization
121 × 3213961
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
388889281
Product of the distinct prime numbers
The prime factorization of 388889281 is 121 × 3213961.
Since it has a total of 2 prime factors.
1 , 9 , 45 , 29 , 199 , 788 , 3935 , 3657 , 73626 , 15489 , 993296 , 488436 , 2635192 , 5878432 , 72021102 , 44372746 , 400910486 , 640235527 , 3368027171 , 2144653872
n×2
777778562
n×3
1166667843
n×4
1555557124
n×5
1944446405
n÷2
194444640.5
n÷3
129629760.33333
n÷3
97222320.25
n÷5
77777856.2
n2
151234872876696961
n3
5.8813620975145E+25
n4
2.2871986774031E+34
n5
8.8946704915943E+42
2 √n
19720.275885494
3 √n
729.92010197049
4 √n
140.42889975178
5 √n
52.235432454764
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
-388889280
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 388889281 can be divided by 4 positive divisors.
The sum of these divisors (counting 388889281) is 1, the average is 0.25.
Base
System
Value
2
Binary
10111001011011111101011000001
3
Ternary
1000002202121210201
4
Quaternary
113023133223001
5
Quinary
1244023424111
6
Senary
102331125201
8
Octal
2713375301
10
Decimal
388889281
12
Duodecimal
aa2a3801
16
Hexadecimal
172dfac1
20
Vigesimal
61ab341
36
Base36
6fj8w1
md5
512a9f50f2756581295100a312bf16e6
sha1
77a22a92fdf8795ecfcacf74dcebae0a10e369ba
sha256
59c21fd52ac593afd9ab9734838ed450e83bcdd76dbbfd17df7d5e8a9f5baccc
sha512
ff21dfec7e0687d6367314d728454ccdf20f6b1540efba80b794b694730a3813d03417dafa05a0b1a409266bdbb8c5fe6ac19327f89453761cf8f39cc5b67c82
ripemd-160
05236d63e61d5a0fc856eec65cb5baf02c16967d
Diameter
777778562
Circumference
2443463416.4988
Area
4.7511836559602E+17
Volume
2.4635791944871E+26
Surface area
1.9004734623841E+18
Circumference
2443463416.4988
Perimeter
1555557124
Area
151234872876696961
Diagonal
549972495.45172
Surface area
907409237260181766
Volume
5.8813620975145E+25
Space diagonal
673575993.21093
Perimeter
1166667843
Area
6.5486620924665E+16
Altitude
336787996.60546
Surface area
6.5486620924665E+16
Volume
6.9312517029434E+24
Height
183324165.15057