21554887 is an odd 8-digits composite number following 21554886
and preceding 21554888 . In scientific notation, it is written as 2.1554887 × 10^7.
The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors.
There are 20574840 positive integers (up to 21554887) that are relatively prime to 21554887.
21554887 has 8 divisors, whose sum is 22538880
The reverse of 21554887 is 78845512
Previous prime number is 859
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
twenty-one million five hundred fifty-four thousand eight hundred eighty-seven
Scientific notation
2.1554887 × 10^7
Engineering notation
2.1554887 × 10^6
Prime Factorization
23 × 859 × 1091
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21554887
Product of the distinct prime numbers
The prime factorization of 21554887 is 23 × 859 × 1091.
Since it has a total of 3 prime factors.
5 , 8 , 10 , 35 , 385 , 604 , 6554 , 2379 , 40559 , 12559 , 860027 , 118695 , 6936246 , 4730940 , 29281931 , 42750308 , 171229699 , 550939523 , 5766419726 , 8649836415
n×2
43109774
n×3
64664661
n×4
86219548
n×5
107774435
n÷2
10777443.5
n÷3
7184962.3333333
n÷3
5388721.75
n÷5
4310977.4
n2
464613153582769
n3
1.001468402419E+22
n4
2.1586538248213E+29
n5
4.652953926614E+36
2 √n
4642.7240925991
3 √n
278.30130969688
4 √n
68.137538057954
5 √n
29.289310636026
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
-21554886
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 21554887 can be divided by 8 positive divisors.
The sum of these divisors (counting 21554887) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001110011011000111
3
Ternary
1111120002202011
4
Quaternary
1102032123013
5
Quinary
21004224022
6
Senary
2045555051
8
Octal
122163307
10
Decimal
21554887
12
Duodecimal
7275a87
16
Hexadecimal
148e6c7
20
Vigesimal
6ee747
36
Base36
ctzuv
md5
599f8c184fd38a856a55c86d07c706f0
sha1
9b9975873cd47884e295267c3160336e841f05b3
sha256
70c5b8bcf1a51dd6349fed8e74bce9b49628504fe860edb6639d9cf7aafcea2f
sha512
c606463e2ba8d578d0c1490fa8a268a33a5993687ebfadf8d7be702f04f5916a23e04e880270e48d39547a6d111b32d784bab84772cb5559b65594db6a2b4ec2
ripemd-160
a49a474841d9a2ea528725877d35f560ab2748d1
Diameter
43109774
Circumference
135433349.29632
Area
1.4596252700568E+15
Volume
4.1949410344559E+22
Surface area
5.8385010802273E+15
Circumference
135433349.29632
Perimeter
86219548
Area
464613153582769
Diagonal
30483213.53082
Surface area
2787678921496614
Volume
1.001468402419E+22
Space diagonal
37334159.435406
Perimeter
64664661
Area
2.0118339696754E+14
Altitude
18667079.717703
Surface area
2.0118339696754E+14
Volume
1.1802418308242E+21
Height
10161071.17694