28787788 (number)

28787788 is an even 8-digits composite number following 28787787 and preceding 28787789. In scientific notation, it is written as 2.8787788 × 10^7. The sum of its digits is 55. It has a total of 4 prime factors and 12 positive divisors. There are 14340240 positive integers (up to 28787788) that are relatively prime to 28787788.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8787788 × 10^7
Engineering notation 2.8787788 × 10^6

Prime Factorization of 28787788

Prime Factorization 2 × 2 × 271 × 26557

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 14393894
Product of the distinct prime numbers

The prime factorization of 28787788 is 2 × 2 × 271 × 26557. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 7, 9, 37, 400, 909, 1629, 1009, 39074, 24091, 749802, 76312, 2332536, 2319079, 59240929, 36852637, 994448686, 798555208, 9773756699, 6241367520

Basic calculations (n = 28787788)

Multiplication

n×y
n×2 57575576
n×3 86363364
n×4 115151152
n×5 143938940

Division

n÷y
n÷2 14393894
n÷3 9595929.3333333
n÷3 7196947
n÷5 5757557.6

Exponentiation

ny
n2 828736737932944
n3 2.3857497519425E+22
n4 6.8680458079974E+29
n5 1.9771584669492E+37

Nth Root

y√n
2√n 5365.4252394382
3√n 306.48044196757
4√n 73.249063061845
5√n 31.034278929239

Divisors of 28787788

1, 2, 4, 271, 542, 1084, 26557, 53114, 106228, 7196947, 14393894, 28787788

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 -28787787
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 28787788 can be divided by 12 positive divisors. The sum of these divisors (counting 28787788) is 1, the average is 0.083333333333333.

Base conversion 28787788

Base System Value
2 Binary 1101101110100010001001100
3 Ternary 2000011120102101
4 Quaternary 1231310101030
5 Quinary 24332202123
6 Senary 2505004444
8 Octal 155642114
10 Decimal 28787788
12 Duodecimal 9783724
16 Hexadecimal 1b7444c
20 Vigesimal 8ji998
36 Base36 h50ss

Cryptographic Hash Functions

md5 0f24b1bd13e4554ff92966482d594988
sha1 0fcca5c99901704ec0ae375502ceded97fd35a53
sha256 e606c60f5516f8b7b8325bfd7283876185e354a75534ebc9df5baabf3e20da9c
sha512 3ea43190886fc227335126ff22797dbdd54379a23b629692cd21ac87f899ad99343c11c1b38f32015055049235ed9a0d44be314fca607fd351bd25d792c15d02
ripemd-160 0ef85f00b0a23e572af52086d1321f05f14a9e77

28787788 as geometric shapes

Circle

Radius = n
Diameter 57575576
Circumference 180879006.5878
Area 2.6035532476501E+15

Sphere

Radius = n
Volume 9.9934051920084E+22
Surface area 1.04142129906E+16
Circumference 180879006.5878

Square

Length = n
Perimeter 115151152
Area 828736737932944
Diagonal 40712080.220321

Cube

Length = n
Surface area 4972420427597664
Volume 2.3857497519425E+22
Space diagonal 49861911.453522

Equilateral Triangle

Length = n
Perimeter 86363364
Area 3.5885353404969E+14
Altitude 24930955.726761

Triangular Pyramid

Length = n
Surface area 3.5885353404969E+14
Volume 2.8116330463545E+21
Height 13570693.406774