28752721 is an odd 8-digits prime number following 28752720
and preceding 28752722 . In scientific notation, it is written as 2.8752721 × 10^7.
The sum of its digits is 34. It has a total of 1 prime factors and 2 positive divisors.
There are 28752720 positive integers (up to 28752721) that are relatively prime to 28752721.
28752721 has 2 divisors, whose sum is 28752722
The reverse of 28752721 is 12725782
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 34 Digital Root 7
Name
twenty-eight million seven hundred fifty-two thousand seven hundred twenty-one
Scientific notation
2.8752721 × 10^7
Engineering notation
2.8752721 × 10^6
Prime Factorization
28752721
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28752721 Product of the distinct prime numbers
The prime factorization of 28752721 is 28752721.
Since it has a total of 1 prime factors.
5 , 1 , 90 , 57 , 149 , 335 , 675 , 4762 , 61232 , 67756 , 71897 , 916573 , 2592753 , 4109136 , 10189745 , 86544908 , 518072731 , 292087073 , 2850854748 , 4947526920
n×2
57505442
n×3
86258163
n×4
115010884
n×5
143763605
n÷2
14376360.5
n÷3
9584240.3333333
n÷3
7188180.25
n÷5
5750544.2
n2
826718964903841
n3
2.3770419743289E+22
n4
6.8346424693168E+29
n5
1.9651456805502E+37
2 √n5362.1563759368
3 √n306.35594801582
4 √n73.226746315379
5 √n31.026714543193
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28752722 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14376361 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5362.1564691829 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999304414 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28752721 can be divided by 2 positive divisors.
The sum of these divisors (counting 28752721) is 28752722, the average is 14376361.
Base
System
Value
2
Binary
1101101101011101101010001
3
Ternary
2000002210022121
4
Quaternary
1231223231101
5
Quinary
24330041341
6
Senary
2504134241
8
Octal
155535521
10
Decimal
28752721
12
Duodecimal
9767381
16
Hexadecimal
1b6bb51
20
Vigesimal
8je1g1
36
Base36
h49qp
md5
fc09c699cadaf9398ab211f1e5eb086d
sha1
3ec379cdb1bbcda8f5edd7e5bbf2c802dc417f92
sha256
bbc079ee955fe5f60f781cfb195aac00969b567bca6148f72719bd1c1ce8cb99
sha512
85e8b082f755b847caf959b696536fcd5b11319da3e5d9d9a47c791ffe013b260b4133e0f223cfc7ff98fef2e48166570465e42c634e77a0f7dfda55723f67a2
ripemd-160
e3a1984bf3e9b7aa1b9a7c61125b87ec40fdafd4
Diameter
57505442
Circumference
180658674.12863
Area
2.5972142267253E+15
Volume
9.956930138435E+22
Surface area
1.0388856906901E+16
Circumference
180658674.12863
Perimeter
115010884
Area
826718964903841
Diagonal
40662487.99333
Surface area
4960313789423046
Volume
2.3770419743289E+22
Space diagonal
49801173.627853
Perimeter
86258163
Area
3.5797981269855E+14
Altitude
24900586.813926
Surface area
3.5797981269855E+14
Volume
2.8013708320217E+21
Height
13554162.664443