28987788 (number)

28987788 is an even 8-digits composite number following 28987787 and preceding 28987789. In scientific notation, it is written as 2.8987788 × 10^7. The sum of its digits is 57. It has a total of 5 prime factors and 24 positive divisors. There are 9094144 positive integers (up to 28987788) that are relatively prime to 28987788.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred eighty-seven thousand seven hundred eighty-eight

Notation

Scientific notation 2.8987788 × 10^7
Engineering notation 2.8987788 × 10^6

Prime Factorization of 28987788

Prime Factorization 2 × 2 × 3 × 17 × 142097

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 14493894
Product of the distinct prime numbers

The prime factorization of 28987788 is 2 × 2 × 3 × 17 × 142097. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 8, 96, 49, 85, 897, 9857, 3611, 10476, 54491, 672685, 189104, 8146678, 7331351, 82248794, 95211366, 208420892, 538785943, 2276775165, 7769131253

Basic calculations (n = 28987788)

Multiplication

n×y
n×2 57975576
n×3 86963364
n×4 115951152
n×5 144938940

Division

n÷y
n÷2 14493894
n÷3 9662596
n÷3 7246947
n÷5 5797557.6

Exponentiation

ny
n2 840291853132944
n3 2.4358202096745E+22
n4 7.060903984416E+29
n5 2.0467998778861E+37

Nth Root

y√n
2√n 5384.0308320068
3√n 307.18855107343
4√n 73.375955407796
5√n 31.077281043592

Divisors of 28987788

1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 142097, 284194, 426291, 568388, 852582, 1705164, 2415649, 4831298, 7246947, 9662596, 14493894, 28987788

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28987787
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28987788 can be divided by 24 positive divisors. The sum of these divisors (counting 28987788) is 1, the average is 0.041666666666667.

Base conversion 28987788

Base System Value
2 Binary 1101110100101000110001100
3 Ternary 2000112201202210
4 Quaternary 1232211012030
5 Quinary 24410102123
6 Senary 2513150420
8 Octal 156450614
10 Decimal 28987788
12 Duodecimal 985b410
16 Hexadecimal 1ba518c
20 Vigesimal 913998
36 Base36 h9b4c

Cryptographic Hash Functions

md5 5849549d9600ec76caa4c13d285f0674
sha1 7885f6e5add2c5afe06c1f89ac1be4199f78879d
sha256 e19a140fc4d342841c0aa078572bf358daa5d1d0684ea423205c947d2acdd206
sha512 048d526b5bca6eea9f0f3b10657674fd6000e50b94df341c9804103a827324d401d7e410b7ca2b45c0465ff4c69781d91ba17daa97c9adf0cf1a35c8a4d84870
ripemd-160 f416cf7126ec51ea62e26a42351a6c5a30bd1cf6

28987788 as geometric shapes

Circle

Radius = n
Diameter 57975576
Circumference 182135643.64924
Area 2.6398547126738E+15

Sphere

Radius = n
Volume 1.0203139834905E+23
Surface area 1.0559418850695E+16
Circumference 182135643.64924

Square

Length = n
Perimeter 115951152
Area 840291853132944
Diagonal 40994922.932796

Cube

Length = n
Surface area 5041751118797664
Volume 2.4358202096745E+22
Space diagonal 50208321.615035

Equilateral Triangle

Length = n
Perimeter 86963364
Area 3.6385704570312E+14
Altitude 25104160.807518

Triangular Pyramid

Length = n
Surface area 3.6385704570312E+14
Volume 2.8706416466868E+21
Height 13664974.310932