28993987 (number)

28993987 is an odd 8-digits composite number following 28993986 and preceding 28993988. In scientific notation, it is written as 2.8993987 × 10^7. The sum of its digits is 55. It has a total of 3 prime factors and 8 positive divisors. There are 26246400 positive integers (up to 28993987) that are relatively prime to 28993987.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred ninety-three thousand nine hundred eighty-seven

Notation

Scientific notation 2.8993987 × 10^7
Engineering notation 2.8993987 × 10^6

Prime Factorization of 28993987

Prime Factorization 11 × 241 × 10937

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28993987
Product of the distinct prime numbers

The prime factorization of 28993987 is 11 × 241 × 10937. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 28993987)

Multiplication

n×y
n×2 57987974
n×3 86981961
n×4 115975948
n×5 144969935

Division

n÷y
n÷2 14496993.5
n÷3 9664662.3333333
n÷3 7248496.75
n÷5 5798797.4

Exponentiation

ny
n2 840651282156169
n3 2.4373832346369E+22
n4 7.0669457819081E+29
n5 2.0489893413035E+37

Nth Root

y√n
2√n 5384.6064851575
3√n 307.21044680072
4√n 73.379877930925
5√n 31.078610096973

Divisors of 28993987

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28993986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28993987 can be divided by 8 positive divisors. The sum of these divisors (counting 28993987) is 1, the average is 0.125.

Base conversion 28993987

Base System Value
2 Binary 1101110100110100111000011
3 Ternary 2000120001021101
4 Quaternary 1232212213003
5 Quinary 24410301422
6 Senary 2513235231
8 Octal 156464703
10 Decimal 28993987
12 Duodecimal 9862b17
16 Hexadecimal 1ba69c3
20 Vigesimal 9144j7
36 Base36 h9fwj

Cryptographic Hash Functions

md5 4d18900c2e8a6ac72f862566726fb904
sha1 3e60b03674e6e2a8205e614fc12fe92c0e419c75
sha256 cad2f1f1b9c392e8e8eb9dbf8e5ba9cad2b7f05547804a2deccc73a7d856f074
sha512 56a75a50d283c87d84115855195498dc24d971a593ca06461ee595c8cb80bba859fe08217c6634c57760ed83fab0f49ec14e54c9fb90f13a6f54e4e1457fbc5b
ripemd-160 56b01947609383dfb105d7f3702547c4f091025d

28993987 as geometric shapes

Circle

Radius = n
Diameter 57987974
Circumference 182174593.11496
Area 2.6409838922527E+15

Sphere

Radius = n
Volume 1.0209687018558E+23
Surface area 1.0563935569011E+16
Circumference 182174593.11496

Square

Length = n
Perimeter 115975948
Area 840651282156169
Diagonal 41003689.642669

Cube

Length = n
Surface area 5043907692937014
Volume 2.4373832346369E+22
Space diagonal 50219058.597992

Equilateral Triangle

Length = n
Perimeter 86981961
Area 3.640126830356E+14
Altitude 25109529.298996

Triangular Pyramid

Length = n
Surface area 3.640126830356E+14
Volume 2.8724836892703E+21
Height 13667896.547556