28931691 (number)

28931691 is an odd 8-digits composite number following 28931690 and preceding 28931692. In scientific notation, it is written as 2.8931691 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 12 positive divisors. There are 18814080 positive integers (up to 28931691) that are relatively prime to 28931691.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred thirty-one thousand six hundred ninety-one

Notation

Scientific notation 2.8931691 × 10^7
Engineering notation 2.8931691 × 10^6

Prime Factorization of 28931691

Prime Factorization 3 × 41 × 41 × 5737

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 705651
Product of the distinct prime numbers

The prime factorization of 28931691 is 3 × 41 × 41 × 5737. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 10, 2, 74, 866, 680, 3313, 1229, 52324, 58901, 984736, 390802, 9772123, 9489117, 17324184, 11751716, 83296326, 714548978, 6583205681, 180541285

Basic calculations (n = 28931691)

Multiplication

n×y
n×2 57863382
n×3 86795073
n×4 115726764
n×5 144658455

Division

n÷y
n÷2 14465845.5
n÷3 9643897
n÷3 7232922.75
n÷5 5786338.2

Exponentiation

ny
n2 837042744119481
n3 2.4217062026657E+22
n4 7.0064055548307E+29
n5 2.0270716053305E+37

Nth Root

y√n
2√n 5378.8187364885
3√n 306.99026660847
4√n 73.340430435664
5√n 31.065243607095

Divisors of 28931691

1, 3, 41, 123, 1681, 5043, 5737, 17211, 235217, 705651, 9643897, 28931691

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 -28931690
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 28931691 can be divided by 12 positive divisors. The sum of these divisors (counting 28931691) is 1, the average is 0.083333333333333.

Base conversion 28931691

Base System Value
2 Binary 1101110010111011001101011
3 Ternary 2000102212211010
4 Quaternary 1232113121223
5 Quinary 24401303231
6 Senary 2512035003
8 Octal 156273153
10 Decimal 28931691
12 Duodecimal 9832a63
16 Hexadecimal 1b9766b
20 Vigesimal 90g94b
36 Base36 h83u3

Cryptographic Hash Functions

md5 ebf2ce7728915e0bf51704bd09f63c1a
sha1 4c8bea9ddeac7e389009585e9689d67bba2b8374
sha256 12431b522b66ceed3b043b0c3a565d7ebb3868a58de480c9d30b3db9624831f3
sha512 e52fa05f11ea4106b3175cb5d809b1ed15e78bc276ac2498df42be0f9b86a6fde5b83d26511019d121105d82ac45838590ec51ba113834574a6c1cc31e8e6863
ripemd-160 30e675f363b96ccc8815a17f1784bd280661ac9a

28931691 as geometric shapes

Circle

Radius = n
Diameter 57863382
Circumference 181783175.80306
Area 2.6296473356664E+15

Sphere

Radius = n
Volume 1.0144019220596E+23
Surface area 1.0518589342666E+16
Circumference 181783175.80306

Square

Length = n
Perimeter 115726764
Area 837042744119481
Diagonal 40915589.794588

Cube

Length = n
Surface area 5022256464716886
Volume 2.4217062026657E+22
Space diagonal 50111158.760883

Equilateral Triangle

Length = n
Perimeter 86795073
Area 3.6245014023045E+14
Altitude 25055579.380442

Triangular Pyramid

Length = n
Surface area 3.6245014023045E+14
Volume 2.8540081299107E+21
Height 13638529.931529