28445981 (number)

28445981 is an odd 8-digits composite number following 28445980 and preceding 28445982. In scientific notation, it is written as 2.8445981 × 10^7. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 26772416 positive integers (up to 28445981) that are relatively prime to 28445981.

Interesting facts

Basic properties

Name

Name twenty-eight million four hundred forty-five thousand nine hundred eighty-one

Notation

Scientific notation 2.8445981 × 10^7
Engineering notation 2.8445981 × 10^6

Prime Factorization of 28445981

Prime Factorization 289 × 98429

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28445981
Product of the distinct prime numbers

The prime factorization of 28445981 is 289 × 98429. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 3, 16, 66, 472, 347, 5660, 3028, 43929, 20090, 598260, 804470, 7453008, 1280713, 15756918, 15180943, 42433224, 258225476, 2795408521, 5496209764

Basic calculations (n = 28445981)

Multiplication

n×y
n×2 56891962
n×3 85337943
n×4 113783924
n×5 142229905

Division

n÷y
n÷2 14222990.5
n÷3 9481993.6666667
n÷3 7111495.25
n÷5 5689196.2

Exponentiation

ny
n2 809173835052361
n3 2.3017743537597E+22
n4 6.5476229533335E+29
n5 1.8625355812569E+37

Nth Root

y√n
2√n 5333.4773834713
3√n 305.2626278643
4√n 73.030660571238
5√n 30.960230340608

Divisors of 28445981

1, 289, 98429, 28445981

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28445980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28445981 can be divided by 4 positive divisors. The sum of these divisors (counting 28445981) is 1, the average is 0.25.

Base conversion 28445981

Base System Value
2 Binary 1101100100000110100011101
3 Ternary 1222112012112212
4 Quaternary 1230200310131
5 Quinary 24240232411
6 Senary 2453410205
8 Octal 154406435
10 Decimal 28445981
12 Duodecimal 9639965
16 Hexadecimal 1b20d1d
20 Vigesimal 8hfej1
36 Base36 gxp25

Cryptographic Hash Functions

md5 6c1919e96b0d1857595636716c8d1dbc
sha1 bca78842638f748544cf9e102cd9d60328afd1ee
sha256 f85681436ed103ddf5dfb80c72832da699b6bc0f14dc8b8983bd822184693b6e
sha512 e52410bca381672374903883a6726899de212067369f79fdb31af811af2f4d925c3896ffdfb852d2b1b9ca9de08e56b780b72e33e956c9f95cae66388f732d7c
ripemd-160 5fda459aad5af91f3e1b824122637b26a4dfbc84

28445981 as geometric shapes

Circle

Radius = n
Diameter 56891962
Circumference 178731369.86751
Area 2.5420945756776E+15

Sphere

Radius = n
Volume 9.641649866657E+22
Surface area 1.016837830271E+16
Circumference 178731369.86751

Square

Length = n
Perimeter 113783924
Area 809173835052361
Diagonal 40228692.125207

Cube

Length = n
Surface area 4855043010314166
Volume 2.3017743537597E+22
Space diagonal 49269884.363139

Equilateral Triangle

Length = n
Perimeter 85337943
Area 3.5038254861651E+14
Altitude 24634942.181569

Triangular Pyramid

Length = n
Surface area 3.5038254861651E+14
Volume 2.7126670905079E+21
Height 13409564.041736