28804981 (number)

28804981 is an odd 8-digits composite number following 28804980 and preceding 28804982. In scientific notation, it is written as 2.8804981 × 10^7. The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors. There are 28026432 positive integers (up to 28804981) that are relatively prime to 28804981.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8804981 × 10^7
Engineering notation 2.8804981 × 10^6

Prime Factorization of 28804981

Prime Factorization 37 × 778513

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28804981
Product of the distinct prime numbers

The prime factorization of 28804981 is 37 × 778513. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 28804981)

Multiplication

n×y
n×2 57609962
n×3 86414943
n×4 115219924
n×5 144024905

Division

n÷y
n÷2 14402490.5
n÷3 9601660.3333333
n÷3 7201245.25
n÷5 5760996.2

Exponentiation

ny
n2 829726930410361
n3 2.3900268465659E+22
n4 6.884467790482E+29
n5 1.9830696389995E+37

Nth Root

y√n
2√n 5367.0272032104
3√n 306.54144317618
4√n 73.259997291908
5√n 31.037984979434

Divisors of 28804981

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 -28804980
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 28804981 can be divided by 4 positive divisors. The sum of these divisors (counting 28804981) is 1, the average is 0.25.

Base conversion 28804981

Base System Value
2 Binary 1101101111000011101110101
3 Ternary 2000012110000011
4 Quaternary 1231320131311
5 Quinary 24333224411
6 Senary 2505220221
8 Octal 155703565
10 Decimal 28804981
12 Duodecimal 9791671
16 Hexadecimal 1b78775
20 Vigesimal 900c91
36 Base36 h5e2d

Cryptographic Hash Functions

md5 17511fbaf24c5ce835f57172cfb8b878
sha1 d235f7340a9d9060a4473551a8c874a582e2b8b0
sha256 2db368661dcbe9c37ebb04470e0691306c4c3620316ae6cdd75e704b1125ce81
sha512 15fe8930aa92ae51b7a8acf16e67fc301bb1d3d9917dd54ae6ae2165cfb2236a2e236490812d846e64c3bccb8a0e8dcadf23921a7feba8b26854687ddb495ccf
ripemd-160 93e4b3ee06b1de08974d091bbba955c775bee8f8

28804981 as geometric shapes

Circle

Radius = n
Diameter 57609962
Circumference 180987033.39279
Area 2.6066640290628E+15

Sphere

Radius = n
Volume 1.0011321044072E+23
Surface area 1.0426656116251E+16
Circumference 180987033.39279

Square

Length = n
Perimeter 115219924
Area 829726930410361
Diagonal 40736394.794099

Cube

Length = n
Surface area 4978361582462166
Volume 2.3900268465659E+22
Space diagonal 49891690.603056

Equilateral Triangle

Length = n
Perimeter 86414943
Area 3.5928229996973E+14
Altitude 24945845.301528

Triangular Pyramid

Length = n
Surface area 3.5928229996973E+14
Volume 2.8166736507077E+21
Height 13578798.2647