28742487 (number)

28742487 is an odd 8-digits composite number following 28742486 and preceding 28742488. In scientific notation, it is written as 2.8742487 × 10^7. The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors. There are 18543480 positive integers (up to 28742487) that are relatively prime to 28742487.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8742487 × 10^7
Engineering notation 2.8742487 × 10^6

Prime Factorization of 28742487

Prime Factorization 3 × 31 × 309059

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28742487
Product of the distinct prime numbers

The prime factorization of 28742487 is 3 × 31 × 309059. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 28742487)

Multiplication

n×y
n×2 57484974
n×3 86227461
n×4 114969948
n×5 143712435

Division

n÷y
n÷2 14371243.5
n÷3 9580829
n÷3 7185621.75
n÷5 5748497.4

Exponentiation

ny
n2 826130558945169
n3 2.3745046850784E+22
n4 6.8249170042306E+29
n5 1.9616508827018E+37

Nth Root

y√n
2√n 5361.2020107435
3√n 306.31959645541
4√n 73.220229518511
5√n 31.02450555147

Divisors of 28742487

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28742486
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28742487 can be divided by 8 positive divisors. The sum of these divisors (counting 28742487) is 1, the average is 0.125.

Base conversion 28742487

Base System Value
2 Binary 1101101101001001101010111
3 Ternary 2000002021021120
4 Quaternary 1231221031113
5 Quinary 24324224422
6 Senary 2504015023
8 Octal 155511527
10 Decimal 28742487
12 Duodecimal 9761473
16 Hexadecimal 1b69357
20 Vigesimal 8jcg47
36 Base36 h41uf

Cryptographic Hash Functions

md5 01db4d4ca03b0a22487f06e5056ae64a
sha1 32c296ad4fe44227bb3e3a35865afc892101193f
sha256 2d6a8680cac2729b29f3cbcdacb80748a4e7e28fcbbfbd5c00d86a1400c51d46
sha512 10212227b18097b7f3e5751270488985c21c015380a3aa1f43a378067baed3f3d2fb1ee4adbbfd81c86c9420c90657cae982d729a61ff883e1076764b32a0e7e
ripemd-160 987e31682cf452d314855aad56eab6ff8bf8e410

28742487 as geometric shapes

Circle

Radius = n
Diameter 57484974
Circumference 180594372.0102
Area 2.5953656948882E+15

Sphere

Radius = n
Volume 9.9463019660759E+22
Surface area 1.0381462779553E+16
Circumference 180594372.0102

Square

Length = n
Perimeter 114969948
Area 826130558945169
Diagonal 40648014.931732

Cube

Length = n
Surface area 4956783353671014
Volume 2.3745046850784E+22
Space diagonal 49783447.819888

Equilateral Triangle

Length = n
Perimeter 86227461
Area 3.5772502544458E+14
Altitude 24891723.909944

Triangular Pyramid

Length = n
Surface area 3.5772502544458E+14
Volume 2.7983806079636E+21
Height 13549338.310577