28931440 (number)

28931440 is an even 8-digits composite number following 28931439 and preceding 28931441. In scientific notation, it is written as 2.8931440 × 10^7. The sum of its digits is 31. It has a total of 6 prime factors and 20 positive divisors. There are 11572544 positive integers (up to 28931440) that are relatively prime to 28931440.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred thirty-one thousand four hundred forty

Notation

Scientific notation 2.8931440 × 10^7
Engineering notation 2.8931440 × 10^6

Prime Factorization of 28931440

Prime Factorization 2 × 2 × 2 × 2 × 5 × 361643

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 3616430
Product of the distinct prime numbers

The prime factorization of 28931440 is 2 × 2 × 2 × 2 × 5 × 361643. Since it has a total of 6 prime factors.

Most popular turbo-numbers

4, 6, 6, 43, 596, 716, 5416, 6492, 31339, 57880, 260872, 89838, 8384532, 5451423, 15612555, 60645257, 42596671, 633811185, 5082529073, 9266308449

Basic calculations (n = 28931440)

Multiplication

n×y
n×2 57862880
n×3 86794320
n×4 115725760
n×5 144657200

Division

n÷y
n÷2 14465720
n÷3 9643813.3333333
n÷3 7232860
n÷5 5786288

Exponentiation

ny
n2 837028220473600
n3 2.4216431738939E+22
n4 7.006162418692E+29
n5 2.0269836764664E+37

Nth Root

y√n
2√n 5378.7954041774
3√n 306.9893788302
4√n 73.340271366947
5√n 31.065189704935

Divisors of 28931440

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 361643, 723286, 1446572, 1808215, 2893144, 3616430, 5786288, 7232860, 14465720, 28931440

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28931439
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28931440 can be divided by 20 positive divisors. The sum of these divisors (counting 28931440) is 1, the average is 0.05.

Base conversion 28931440

Base System Value
2 Binary 1101110010111010101110000
3 Ternary 2000102212110211
4 Quaternary 1232113111300
5 Quinary 24401301230
6 Senary 2512033504
8 Octal 156272560
10 Decimal 28931440
12 Duodecimal 9832894
16 Hexadecimal 1b97570
20 Vigesimal 90g8c0
36 Base36 h83n4

Cryptographic Hash Functions

md5 33cc8b18e5f993d5fd7e7acea6c630da
sha1 5ab0bba225a210b1c67f0eef5dceca39fe798de4
sha256 f08cf61e6ff0df7c7c3df1d60059a71486d841089b5dd121565c2eb5d7ae5842
sha512 63bdf9be35e07d3831923856551d9ba97a39baf9f0c650ac4bcd737662d43fb6239df8932e5d37c0a9b415c9c836ebf35ec0abf1d28558e14f9f533ad418f280
ripemd-160 04cca17bb2cd78684b390034df46fbaeaef725a2

28931440 as geometric shapes

Circle

Radius = n
Diameter 57862880
Circumference 181781598.72355
Area 2.6296017082872E+15

Sphere

Radius = n
Volume 1.0143755206294E+23
Surface area 1.0518406833149E+16
Circumference 181781598.72355

Square

Length = n
Perimeter 115725760
Area 837028220473600
Diagonal 40915234.826983

Cube

Length = n
Surface area 5022169322841600
Volume 2.4216431738939E+22
Space diagonal 50110724.016131

Equilateral Triangle

Length = n
Perimeter 86794320
Area 3.6244385130731E+14
Altitude 25055362.008065

Triangular Pyramid

Length = n
Surface area 3.6244385130731E+14
Volume 2.8539338497908E+21
Height 13638411.608994