28742421 (number)

28742421 is an odd 8-digits composite number following 28742420 and preceding 28742422. In scientific notation, it is written as 2.8742421 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 18080640 positive integers (up to 28742421) that are relatively prime to 28742421.

Interesting facts

Basic properties

Name

Name twenty-eight million seven hundred forty-two thousand four hundred twenty-one

Notation

Scientific notation 2.8742421 × 10^7
Engineering notation 2.8742421 × 10^6

Prime Factorization of 28742421

Prime Factorization 3 × 19 × 293 × 1721

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28742421
Product of the distinct prime numbers

The prime factorization of 28742421 is 3 × 19 × 293 × 1721. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 8, 67, 93, 432, 67, 3132, 5972, 99676, 85685, 466308, 995200, 8799197, 3480143, 66616323, 43472065, 152602476, 912268997, 6668057026, 716515801

Basic calculations (n = 28742421)

Multiplication

n×y
n×2 57484842
n×3 86227263
n×4 114969684
n×5 143712105

Division

n÷y
n÷2 14371210.5
n÷3 9580807
n÷3 7185605.25
n÷5 5748484.2

Exponentiation

ny
n2 826126764941241
n3 2.3744883277309E+22
n4 6.8248543175228E+29
n5 1.9616283605791E+37

Nth Root

y√n
2√n 5361.1958554039
3√n 306.31936199288
4√n 73.220187485446
5√n 31.024491303439

Divisors of 28742421

1, 3, 19, 57, 293, 879, 1721, 5163, 5567, 16701, 32699, 98097, 504253, 1512759, 9580807, 28742421

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 -28742420
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 28742421 can be divided by 16 positive divisors. The sum of these divisors (counting 28742421) is 1, the average is 0.0625.

Base conversion 28742421

Base System Value
2 Binary 1101101101001001100010101
3 Ternary 2000002021012010
4 Quaternary 1231221030111
5 Quinary 24324224141
6 Senary 2504014433
8 Octal 155511425
10 Decimal 28742421
12 Duodecimal 9761419
16 Hexadecimal 1b69315
20 Vigesimal 8jcg11
36 Base36 h41sl

Cryptographic Hash Functions

md5 091d5c67fa885aa7f434c721236a8baf
sha1 f969450157479c4114a86422789d16b3f23c98ed
sha256 62fa30bff40d36a77cea4b4e991eaf99220f287c6ec21c59bbf7786507dca694
sha512 c3d0c79dd71deb31600690888c505434ec3c109ff971edeaeb171a525073e0ddfdf4f92a25960e6f3783bda798a18a5a9fa82530442a712995b11d02fb9316d8
ripemd-160 ebf9b6490bd6b33d72598ffb102b56ccd5c0a66e

28742421 as geometric shapes

Circle

Radius = n
Diameter 57484842
Circumference 180593957.31997
Area 2.5953537756733E+15

Sphere

Radius = n
Volume 9.9462334485789E+22
Surface area 1.0381415102693E+16
Circumference 180593957.31997

Square

Length = n
Perimeter 114969684
Area 826126764941241
Diagonal 40647921.593637

Cube

Length = n
Surface area 4956760589647446
Volume 2.3744883277309E+22
Space diagonal 49783333.504535

Equilateral Triangle

Length = n
Perimeter 86227263
Area 3.5772338259269E+14
Altitude 24891666.752267

Triangular Pyramid

Length = n
Surface area 3.5772338259269E+14
Volume 2.7983613306447E+21
Height 13549307.197879