28007905 (number)

28007905 is an odd 8-digits composite number following 28007904 and preceding 28007906. In scientific notation, it is written as 2.8007905 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 12 positive divisors. There are 21430112 positive integers (up to 28007905) that are relatively prime to 28007905.

Interesting facts

Basic properties

Name

Name twenty-eight million seven thousand nine hundred five

Notation

Scientific notation 2.8007905 × 10^7
Engineering notation 2.8007905 × 10^6

Prime Factorization of 28007905

Prime Factorization 5 × 23 × 23 × 10589

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 1217735
Product of the distinct prime numbers

The prime factorization of 28007905 is 5 × 23 × 23 × 10589. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 10, 90, 86, 720, 163, 9290, 1019, 10646, 8291, 477780, 174835, 9453763, 2214656, 80049805, 71374994, 698050330, 475071594, 7149178877, 6923228501

Basic calculations (n = 28007905)

Multiplication

n×y
n×2 56015810
n×3 84023715
n×4 112031620
n×5 140039525

Division

n÷y
n÷2 14003952.5
n÷3 9335968.3333333
n÷3 7001976.25
n÷5 5601581

Exponentiation

ny
n2 784442742489025
n3 2.1970597809572E+22
n4 6.153504162437E+29
n5 1.7234675999864E+37

Nth Root

y√n
2√n 5292.2495217062
3√n 303.68747096996
4√n 72.747848914633
5√n 30.864278202597

Divisors of 28007905

1, 5, 23, 115, 529, 2645, 10589, 52945, 243547, 1217735, 5601581, 28007905

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28007904
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28007905 can be divided by 12 positive divisors. The sum of these divisors (counting 28007905) is 1, the average is 0.083333333333333.

Base conversion 28007905

Base System Value
2 Binary 1101010110101110111100001
3 Ternary 1221200221121211
4 Quaternary 1222311313201
5 Quinary 24132223110
6 Senary 2440150121
8 Octal 152656741
10 Decimal 28007905
12 Duodecimal 9468341
16 Hexadecimal 1ab5de1
20 Vigesimal 8f0jf5
36 Base36 gob1d

Cryptographic Hash Functions

md5 a4a06da0a94228c1031ebe1bff8ac4d5
sha1 7da679c0845031906d82d55b441d4bff6982c5cd
sha256 84917a3854e6beef9305deac6b3faad9cca5d584f3afda602f6c4f8d90415528
sha512 282dab2e67ada5b799be75b757ecb7dc66d07bef9ef0b95965a1f606e94847c96126d36442bc9c74fc6da1e5c8fb3500536a97b51b0b94c914bae31bc8a45367
ripemd-160 6acf7654963f7543b4d281efd6ae3dcb08d4c87c

28007905 as geometric shapes

Circle

Radius = n
Diameter 56015810
Circumference 175978857.18088
Area 2.4643995569654E+15

Sphere

Radius = n
Volume 9.2030224898037E+22
Surface area 9.8575982278614E+15
Circumference 175978857.18088

Square

Length = n
Perimeter 112031620
Area 784442742489025
Diagonal 39609159.104657

Cube

Length = n
Surface area 4706656454934150
Volume 2.1970597809572E+22
Space diagonal 48511114.473562

Equilateral Triangle

Length = n
Perimeter 84023715
Area 3.3967367140492E+14
Altitude 24255557.236781

Triangular Pyramid

Length = n
Surface area 3.3967367140492E+14
Volume 2.5892597829785E+21
Height 13203053.034886