138972 is an even 6-digits composite number following 138971
and preceding 138973 . In scientific notation, it is written as 1.38972 × 10^5.
The sum of its digits is 30. It has a total of 5 prime factors and 24 positive divisors.
There are 44928 positive integers (up to 138972) that are relatively prime to 138972.
138972 has 24 divisors, whose sum is 334096
The reverse of 138972 is 279831
Previous prime number is 37
Is Prime? no
Number parity even
Number length 6
Sum of Digits 30
Digital Root 3
Name
one hundred thirty-eight thousand nine hundred seventy-two
Scientific notation
1.38972 × 10^5
Engineering notation
1.38972 × 10^3
Prime Factorization
2 × 2 × 3 × 37 × 313
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
69486
Product of the distinct prime numbers
The prime factorization of 138972 is 2 × 2 × 3 × 37 × 313.
Since it has a total of 5 prime factors.
5 , 7 , 80 , 70 , 120 , 808 , 1229 , 2839 , 93100 , 56075 , 771553 , 792530 , 3554885 , 4691324 , 31032611 , 11054029 , 499712640 , 285100642 , 1403399967 , 9880558102
n×2
277944
n×3
416916
n×4
555888
n×5
694860
n÷2
69486
n÷3
46324
n÷3
34743
n÷5
27794.4
n2
19313216784
n3
2683996362906048
n4
3.7300034254578E+20
n5
5.1836603604272E+25
2 √n
372.78948483025
3 √n
51.797536194636
4 √n
19.307757115477
5 √n
10.680349423943
1 , 2 , 3 , 4 , 6 , 12 , 37 , 74 , 111 , 148 , 222 , 313 , 444 , 626 , 939 , 1252 , 1878 , 3756 , 11581 , 23162 , 34743 , 46324 , 69486 , 138972
24 divisors
τ
Total Divisors
24
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-138971
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.041666666666667
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
24
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 138972 can be divided by 24 positive divisors.
The sum of these divisors (counting 138972) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
100001111011011100
3
Ternary
21001122010
4
Quaternary
201323130
5
Quinary
13421342
6
Senary
2551220
8
Octal
417334
10
Decimal
138972
12
Duodecimal
68510
16
Hexadecimal
21edc
20
Vigesimal
h78c
36
Base36
2z8c
md5
572cbfd4596b9d6647bc8e4ac8286953
sha1
21708c4203966a2f87e18f2c9ac3c7b82c52647b
sha256
dde1c647086f0a965a6dd7fa9d425e29ae2590ed9ddc13196dcc6f0124fbde1e
sha512
4f812524209427cdabda37f798b07e4d6418040818fd2f7057b039125bd87b2b50181c66983ff0465ac2f3cf6090ad5d8bfc5cb02a4ebedd7f62c9c2b08b7979
ripemd-160
aee2da7d16b9ca8a8dc6e21a7d0622493c327371
Diameter
277944
Circumference
873186.82850936
Area
60674259965.801
Volume
1.1242697674623E+16
Surface area
242697039863.21
Circumference
873186.82850936
Perimeter
555888
Area
19313216784
Diagonal
196536.08719011
Surface area
115879300704
Volume
2683996362906048
Space diagonal
240706.56482946
Perimeter
416916
Area
8362868181.87
Altitude
120353.28241473
Surface area
8362868181.87
Volume
3.1631200481515E+14
Height
65512.029063371