28345721 is an odd 8-digits prime number following 28345720
and preceding 28345722 . In scientific notation, it is written as 2.8345721 × 10^7.
The sum of its digits is 32. It has a total of 1 prime factors and 2 positive divisors.
There are 28345720 positive integers (up to 28345721) that are relatively prime to 28345721.
28345721 has 2 divisors, whose sum is 28345722
The reverse of 28345721 is 12754382
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 32 Digital Root 5
Name
twenty-eight million three hundred forty-five thousand seven hundred twenty-one
Scientific notation
2.8345721 × 10^7
Engineering notation
2.8345721 × 10^6
Prime Factorization
28345721
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28345721 Product of the distinct prime numbers
The prime factorization of 28345721 is 28345721.
Since it has a total of 1 prime factors.
7 , 1 , 71 , 13 , 647 , 542 , 586 , 6678 , 22924 , 62953 , 892739 , 455941 , 378681 , 3837704 , 96764062 , 59976056 , 213540901 , 266263815 , 685115635 , 7891087678
n×2
56691442
n×3
85037163
n×4
113382884
n×5
141728605
n÷2
14172860.5
n÷3
9448573.6666667
n÷3
7086430.25
n÷5
5669144.2
n2
803479899009841
n3
2.2775217046441E+22
n4
6.4557994811286E+29
n5
1.8299429092402E+37
2 √n5324.0699657311
3 √n304.90356532014
4 √n72.966224828554
5 √n30.93837517459
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28345722 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14172861 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5324.0700596442 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999294426 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28345721 can be divided by 2 positive divisors.
The sum of these divisors (counting 28345721) is 28345722, the average is 14172861.
Base
System
Value
2
Binary
1101100001000010101111001
3
Ternary
1222100010000112
4
Quaternary
1230020111321
5
Quinary
24224030341
6
Senary
2451314105
8
Octal
154102571
10
Decimal
28345721
12
Duodecimal
95ab935
16
Hexadecimal
1b08579
20
Vigesimal
8h3461
36
Base36
gvjp5
md5
ff73397308de5be86db8e1db470ebd43
sha1
0b3b68bf30636d1851a2753aa1ab443ff4ccd647
sha256
88529186ce86363d856871ad1162dc4a5c644327a88aff63d2988689c4cffaa1
sha512
24170681b1951bfc8e851a80bf295449befe9371285498f5ab7a15b7aaee6d805af4d3b47daed3db96bfa0247c33d0e6d7a76e32d5df84e004a6bb2220e4c19e
ripemd-160
746f30b134ff41db2aa1d07f3e3201898867b9d4
Diameter
56691442
Circumference
178101417.70861
Area
2.5242065480364E+15
Volume
9.5400606076017E+22
Surface area
1.0096826192146E+16
Circumference
178101417.70861
Perimeter
113382884
Area
803479899009841
Diagonal
40086903.073444
Surface area
4820879394059046
Volume
2.2775217046441E+22
Space diagonal
49096228.949172
Perimeter
85037163
Area
3.4791700198634E+14
Altitude
24548114.474586
Surface area
3.4791700198634E+14
Volume
2.6840850694223E+21
Height
13362301.024481