28931388 (number)

28931388 is an even 8-digits composite number following 28931387 and preceding 28931389. In scientific notation, it is written as 2.8931388 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 12 positive divisors. There are 9643792 positive integers (up to 28931388) that are relatively prime to 28931388.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred thirty-one thousand three hundred eighty-eight

Notation

Scientific notation 2.8931388 × 10^7
Engineering notation 2.8931388 × 10^6

Prime Factorization of 28931388

Prime Factorization 2 × 2 × 3 × 2410949

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 14465694
Product of the distinct prime numbers

The prime factorization of 28931388 is 2 × 2 × 3 × 2410949. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 9, 84, 59, 577, 722, 4567, 8781, 61598, 72956, 674501, 223439, 5030604, 7906656, 75711268, 14810026, 145984855, 557124667, 1986710842, 8682005919

Basic calculations (n = 28931388)

Multiplication

n×y
n×2 57862776
n×3 86794164
n×4 115725552
n×5 144656940

Division

n÷y
n÷2 14465694
n÷3 9643796
n÷3 7232847
n÷5 5786277.6

Exponentiation

ny
n2 837025211606544
n3 2.4216301162771E+22
n4 7.0061120486498E+29
n5 2.0269654605096E+37

Nth Root

y√n
2√n 5378.7905703792
3√n 306.98919490737
4√n 73.340238412342
5√n 31.065178537907

Divisors of 28931388

1, 2, 3, 4, 6, 12, 2410949, 4821898, 7232847, 9643796, 14465694, 28931388

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 -28931387
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 28931388 can be divided by 12 positive divisors. The sum of these divisors (counting 28931388) is 1, the average is 0.083333333333333.

Base conversion 28931388

Base System Value
2 Binary 1101110010111010100111100
3 Ternary 2000102212101220
4 Quaternary 1232113110330
5 Quinary 24401301023
6 Senary 2512033340
8 Octal 156272474
10 Decimal 28931388
12 Duodecimal 9832850
16 Hexadecimal 1b9753c
20 Vigesimal 90g898
36 Base36 h83lo

Cryptographic Hash Functions

md5 1c446ddffe907436232ae5106bfa8d4b
sha1 638e9c0d35d6dd1eed24e2639ca48286bef256fe
sha256 4b635a14099ca46883c15144ac6ccdc8b28dd39688f83e271c3502cefef0b267
sha512 f692dc750a79e59a5e74a7a7b46ad3da30e4b7ccc2f7c3a3ad5ae185b162c0eada73834d59be7a12e21bcb1f5b86fd9b913973c00e9e5da087e387023446ecff
ripemd-160 b5a36400428713a5ff0d79096f1e749bded90eb6

28931388 as geometric shapes

Circle

Radius = n
Diameter 57862776
Circumference 181781271.99791
Area 2.6295922556526E+15

Sphere

Radius = n
Volume 1.0143700510677E+23
Surface area 1.051836902261E+16
Circumference 181781271.99791

Square

Length = n
Perimeter 115725552
Area 837025211606544
Diagonal 40915161.287878

Cube

Length = n
Surface area 5022151269639264
Volume 2.4216301162771E+22
Space diagonal 50110633.949489

Equilateral Triangle

Length = n
Perimeter 86794164
Area 3.6244254842966E+14
Altitude 25055316.974744

Triangular Pyramid

Length = n
Surface area 3.6244254842966E+14
Volume 2.8539184612418E+21
Height 13638387.095959