21531657 is an odd 8-digits composite number following 21531656
and preceding 21531658 . In scientific notation, it is written as 2.1531657 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 11768592 positive integers (up to 21531657) that are relatively prime to 21531657.
21531657 has 8 divisors, whose sum is 24964800
The reverse of 21531657 is 75613512
Previous prime number is 69
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million five hundred thirty-one thousand six hundred fifty-seven
Scientific notation
2.1531657 × 10^7
Engineering notation
2.1531657 × 10^6
Prime Factorization
7 × 69 × 44579
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21531657
Product of the distinct prime numbers
The prime factorization of 21531657 is 7 × 69 × 44579.
Since it has a total of 3 prime factors.
5 , 7 , 49 , 18 , 414 , 161 , 5122 , 9915 , 71523 , 12506 , 622699 , 992567 , 8405881 , 9557657 , 5969437 , 81397835 , 908518326 , 674393683 , 4813098996 , 3941839722
n×2
43063314
n×3
64594971
n×4
86126628
n×5
107658285
n÷2
10765828.5
n÷3
7177219
n÷3
5382914.25
n÷5
4306331.4
n2
463612253165649
n3
9.9823400161599E+21
n4
2.1493632128533E+29
n5
4.6279351467575E+36
2 √n
4640.2216541885
3 √n
278.20129736917
4 √n
68.119172442041
5 √n
29.282994813703
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
-21531656
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 21531657 can be divided by 8 positive divisors.
The sum of these divisors (counting 21531657) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001000110000001001
3
Ternary
1111111220212210
4
Quaternary
1102020300021
5
Quinary
21003003112
6
Senary
2045255333
8
Octal
122106011
10
Decimal
21531657
12
Duodecimal
7264549
16
Hexadecimal
1488c09
20
Vigesimal
6eb92h
36
Base36
cthxl
md5
a1efd72a77948e3009f17f5b326d1725
sha1
8f70ff900e0339799bc280ec707f93f556b82e1d
sha256
fa9ee8528d5d20f8f4c59591ff53bd5828c915a5f0e8c8a277b138fe51c30c80
sha512
abfee5dc376724d15ae6d35e8a98e79da3d226b78199496c1050158b23c0f25e3438d192ffa6bb560498a3b21f814ba09b9ac0624a9f02743a4688b235d1bfc4
ripemd-160
377af98427e8f01af97dc0c90c6efe20afe6d95f
Diameter
43063314
Circumference
135287390.90163
Area
1.4564808486594E+15
Volume
4.1813928080538E+22
Surface area
5.8259233946377E+15
Circumference
135287390.90163
Perimeter
86126628
Area
463612253165649
Diagonal
30450361.349766
Surface area
2781673518993894
Volume
9.9823400161599E+21
Space diagonal
37293923.895146
Perimeter
64594971
Area
2.007499943736E+14
Altitude
18646961.947573
Surface area
2.007499943736E+14
Volume
1.1764300529228E+21
Height
10150120.449922