21491839 is an odd 8-digits prime number following 21491838
and preceding 21491840 . In scientific notation, it is written as 2.1491839 × 10^7.
The sum of its digits is 37. It has a total of 1 prime factors and 2 positive divisors.
There are 21491838 positive integers (up to 21491839) that are relatively prime to 21491839.
21491839 has 2 divisors, whose sum is 21491840
The reverse of 21491839 is 93819412
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-one million four hundred ninety-one thousand eight hundred thirty-nine
Scientific notation
2.1491839 × 10^7
Engineering notation
2.1491839 × 10^6
Prime Factorization
21491839
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21491839
Product of the distinct prime numbers
The prime factorization of 21491839 is 21491839.
Since it has a total of 1 prime factors.
4 , 3 , 4 , 42 , 528 , 725 , 8245 , 6178 , 82831 , 33554 , 547429 , 856759 , 9574794 , 1632263 , 84729973 , 97429628 , 761428761 , 92165237 , 3273715008 , 186066855
n×2
42983678
n×3
64475517
n×4
85967356
n×5
107459195
n÷2
10745919.5
n÷3
7163946.3333333
n÷3
5372959.75
n÷5
4298367.8
n2
461899143601921
n3
9.9270620285304E+21
n4
2.1335081886019E+29
n5
4.5853014494613E+36
2 √n
4635.9291409598
3 √n
278.02970112078
4 √n
68.087657772608
5 √n
29.272156319096
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21491840
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10745920
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4635.929248813
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999069414
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21491839 can be divided by 2 positive divisors.
The sum of these divisors (counting 21491839) is 21491840, the average is 10745920.
Base
System
Value
2
Binary
1010001111111000001111111
3
Ternary
1111102220021001
4
Quaternary
1101333001333
5
Quinary
21000214324
6
Senary
2044351131
8
Octal
121770177
10
Decimal
21491839
12
Duodecimal
72454a7
16
Hexadecimal
147f07f
20
Vigesimal
6e69bj
36
Base36
csn7j
md5
22673b92f00b30a853c87646914e37d0
sha1
077a9087e4bab3ca969b08097a6b28ca34e770be
sha256
a400edcfb1edf295538d865b01473b83bcb3913cf4935bd9a3d32d3d1e9674cd
sha512
d0469b793b37a31b5d502d3602872df78307edc7faeac22bc8186789bb6219ddeb85a479dd88c1defaf0a8d90a6b2a4a846f74ee131c8342e5e130b74b559276
ripemd-160
b442ef814a0a84beadfd210770528fc0f7f59e76
Diameter
42983678
Circumference
135037207.02907
Area
1.4510989562392E+15
Volume
4.1582380187415E+22
Surface area
5.8043958249568E+15
Circumference
135037207.02907
Perimeter
85967356
Area
461899143601921
Diagonal
30394050.194139
Surface area
2771394861611526
Volume
9.9270620285304E+21
Space diagonal
37224957.09609
Perimeter
64475517
Area
2.0000819617277E+14
Altitude
18612478.548045
Surface area
2.0000819617277E+14
Volume
1.1699154796056E+21
Height
10131350.064713