28487988 (number)

28487988 is an even 8-digits composite number following 28487987 and preceding 28487989. In scientific notation, it is written as 2.8487988 × 10^7. The sum of its digits is 54. It has a total of 5 prime factors and 24 positive divisors. There are 8937216 positive integers (up to 28487988) that are relatively prime to 28487988.

Interesting facts

Basic properties

Name

Name twenty-eight million four hundred eighty-seven thousand nine hundred eighty-eight

Notation

Scientific notation 2.8487988 × 10^7
Engineering notation 2.8487988 × 10^6

Prime Factorization of 28487988

Prime Factorization 2 × 2 × 9 × 17 × 46549

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 14243994
Product of the distinct prime numbers

The prime factorization of 28487988 is 2 × 2 × 9 × 17 × 46549. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 10, 46, 44, 504, 385, 9843, 2570, 62891, 91851, 880690, 502577, 8373203, 1431208, 11053104, 46833793, 648279857, 927093737, 8718250120, 6023595570

Basic calculations (n = 28487988)

Multiplication

n×y
n×2 56975976
n×3 85463964
n×4 113951952
n×5 142439940

Division

n÷y
n÷2 14243994
n÷3 9495996
n÷3 7121997
n÷5 5697597.6

Exponentiation

ny
n2 811565460288144
n3 2.3119867093903E+22
n4 6.5863849633271E+29
n5 1.8763285579864E+37

Nth Root

y√n
2√n 5337.4139805715
3√n 305.41281733241
4√n 73.057607273791
5√n 30.969368917015

Divisors of 28487988

1, 2, 4, 9, 17, 18, 34, 36, 68, 153, 306, 612, 46549, 93098, 186196, 418941, 791333, 837882, 1582666, 1675764, 3165332, 7121997, 14243994, 28487988

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28487987
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28487988 can be divided by 24 positive divisors. The sum of these divisors (counting 28487988) is 1, the average is 0.041666666666667.

Base conversion 28487988

Base System Value
2 Binary 1101100101011000100110100
3 Ternary 1222121100011200
4 Quaternary 1230223010310
5 Quinary 24243103423
6 Senary 2454332500
8 Octal 154530464
10 Decimal 28487988
12 Duodecimal 965a130
16 Hexadecimal 1b2b134
20 Vigesimal 8i0jj8
36 Base36 gylh0

Cryptographic Hash Functions

md5 86fb8ef7091c4cb3fbb21f2a4b05787b
sha1 949f87107a4a8a0477d8e37c974db3ac512d7023
sha256 0604e408a4ba309c98b30a3293a60bc3c28d3e8395c7739356f9983fc1604cfa
sha512 05af5f03260e4a888faa42879ec0ab378ee6459cf5e98d55bb7625e3ad55ed2be7bd1c731720c99fe72f221a143d309192cb5b28aa98e2ac336e5b3d53b08abf
ripemd-160 aee51a7ed02a3506fae67fd115a8bb055405d41a

28487988 as geometric shapes

Circle

Radius = n
Diameter 56975976
Circumference 178995307.63271
Area 2.5496080879485E+15

Sphere

Radius = n
Volume 9.6844272818905E+22
Surface area 1.0198432351794E+16
Circumference 178995307.63271

Square

Length = n
Perimeter 113951952
Area 811565460288144
Diagonal 40288098.994322

Cube

Length = n
Surface area 4869392761728864
Volume 2.3119867093903E+22
Space diagonal 49342642.621412

Equilateral Triangle

Length = n
Perimeter 85463964
Area 3.5141815272177E+14
Altitude 24671321.310706

Triangular Pyramid

Length = n
Surface area 3.5141815272177E+14
Volume 2.7247024670384E+21
Height 13429366.331441