28781637 (number)

28781637 is an odd 8-digits composite number following 28781636 and preceding 28781638. In scientific notation, it is written as 2.8781637 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 17926272 positive integers (up to 28781637) that are relatively prime to 28781637.

Interesting facts

Basic properties

Name

Name twenty-eight million seven hundred eighty-one thousand six hundred thirty-seven

Notation

Scientific notation 2.8781637 × 10^7
Engineering notation 2.8781637 × 10^6

Prime Factorization of 28781637

Prime Factorization 3 × 19 × 73 × 6917

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28781637
Product of the distinct prime numbers

The prime factorization of 28781637 is 3 × 19 × 73 × 6917. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 2, 38, 100, 775, 133, 5568, 4635, 27998, 82638, 819047, 394852, 4335994, 2393041, 9999430, 96597512, 751658274, 946971688, 1646514008, 7287144427

Basic calculations (n = 28781637)

Multiplication

n×y
n×2 57563274
n×3 86344911
n×4 115126548
n×5 143908185

Division

n÷y
n÷2 14390818.5
n÷3 9593879
n÷3 7195409.25
n÷5 5756327.4

Exponentiation

ny
n2 828382628399769
n3 2.3842208107708E+22
n4 6.8621777903451E+29
n5 1.9750471019117E+37

Nth Root

y√n
2√n 5364.8520016865
3√n 306.45861216159
4√n 73.245150021599
5√n 31.032952615688

Divisors of 28781637

1, 3, 19, 57, 73, 219, 1387, 4161, 6917, 20751, 131423, 394269, 504941, 1514823, 9593879, 28781637

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28781636
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28781637 can be divided by 16 positive divisors. The sum of these divisors (counting 28781637) is 1, the average is 0.0625.

Base conversion 28781637

Base System Value
2 Binary 1101101110010110001000101
3 Ternary 2000011020222120
4 Quaternary 1231302301011
5 Quinary 24332003022
6 Senary 2504520153
8 Octal 155626105
10 Decimal 28781637
12 Duodecimal 9780059
16 Hexadecimal 1b72c45
20 Vigesimal 8jhe1h
36 Base36 h4w1x

Cryptographic Hash Functions

md5 8ef8bacce2a9938b5a4f81f495e056bc
sha1 245e875898d7309a4d6ad6b729b02fac86ccb666
sha256 77bbe5b5f4733685180aff0b3f9938daa51bb6d115c2eaa2877ebe2aafe34a4a
sha512 afed4a0530eff11c6b3e9e52c9ebe6c13b605ba234375b439057e86641447dfd012cb71ac7e116ef279f260c50abe79c8d6c3f1bb09e1ffd75360736c88ee106
ripemd-160 03788aff849575fd9434a091e7dd70191cab300d

28781637 as geometric shapes

Circle

Radius = n
Diameter 57563274
Circumference 180840358.71498
Area 2.6024407797421E+15

Sphere

Radius = n
Volume 9.9870007782046E+22
Surface area 1.0409763118968E+16
Circumference 180840358.71498

Square

Length = n
Perimeter 115126548
Area 828382628399769
Diagonal 40703381.392699

Cube

Length = n
Surface area 4970295770398614
Volume 2.3842208107708E+22
Space diagonal 49851257.609004

Equilateral Triangle

Length = n
Perimeter 86344911
Area 3.5870020012396E+14
Altitude 24925628.804502

Triangular Pyramid

Length = n
Surface area 3.5870020012396E+14
Volume 2.8098311719035E+21
Height 13567793.797566