The math question for the number 1388: Consider a three-digit number that starts with 1 and ends with 8. If you multiply this number by 4 and divide it by 2, what is the result?

To find the result, we multiply 1388 by 4 to get 5552, then divide it by 2. This gives us a final result of 2776.

Math Question: Find the largest prime factor of the number 1388.

To find the largest prime factor of 1388, we start by dividing it by the smallest prime number 2, which gives us 694. Next, we divide it by 2 again, resulting in 347. Since 347 is a prime number, it is the largest prime factor of 1388. Thus, the answer is 347.

Math question: If I subtract 666 from the number 1388 and then divide the result by 2, what is the final answer?

To find the final answer, we first subtract 666 from 1388: 1388 - 666 = 722 Now, we divide the result by 2: 722 ÷ 2 = 361 So, the final answer is 361. By subtracting 666 from 1388 and dividing the result by 2, we obtained this value.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

1388 (number)

1388 is an even 4-digits composite number following 1387 and preceding 1389. In scientific notation, it is written as 1.388 × 10^3. The sum of its digits is 20. It has a total of 3 prime factors and 6 positive divisors. There are 692 positive integers (up to 1388) that are relatively prime to 1388.

Interesting facts

1388 has 6 divisors, whose sum is 2436
The reverse of 1388 is 8831
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 4
Sum of Digits 20
Digital Root 2

Name

Name	one thousand three hundred eighty-eight

Notation

Scientific notation	1.388 × 10^3
Engineering notation	1.388 × 10^3

Prime Factorization of 1388

Prime Factorization 2 × 2 × 347

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	694	Product of the distinct prime numbers

The prime factorization of 1388 is 2 × 2 × 347. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 2, 88, 43, 84, 53, 2931, 4967, 31365, 74161, 581030, 72320, 8391867, 7205558, 62478004, 39738277, 985725131, 289097020, 7144372080, 3083422357

Basic calculations (n = 1388)

Multiplication

n×y

n×2	2776
n×3	4164
n×4	5552
n×5	6940

Division

n÷y

n÷2	694
n÷3	462.66666666667
n÷3	347
n÷5	277.6

Exponentiation

n^y

n²	1926544
n³	2674043072
n⁴	3711571783936
n⁵	5151661636103168

Nth Root

^y√n

²√n	37.255872020394
³√n	11.1548351207
⁴√n	6.1037588435647
⁵√n	4.2508706816018

Divisors of 1388

1, 2, 4, 347, 694, 1388

6 divisors

τ	Total Divisors	6	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-1387	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.16666666666667	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	6	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1388 can be divided by 6 positive divisors. The sum of these divisors (counting 1388) is 1, the average is 0.16666666666667.

Base conversion 1388

Base	System	Value
2	Binary	10101101100
3	Ternary	1220102
4	Quaternary	111230
5	Quinary	21023
6	Senary	10232
8	Octal	2554
10	Decimal	1388
12	Duodecimal	978
16	Hexadecimal	56c
20	Vigesimal	398
36	Base36	12k

Cryptographic Hash Functions

md5	0c0a7566915f4f24853fc4192689aa7e
sha1	55b3e95b981cc5c1c430e9114425358b64e45d85
sha256	e401f2bd399f3456e5348217a7908ca545ea6d179f60f297a1b0133e87d2ff85
sha512	2b63f19ca575a5ae6f690af386fb1b5faf7602e6f6f65d43ad6db763a25175ee701c938bdc7a1e0989ece00f4491a550d594e82c33b0c9b5717b6d64cea3f4b8
ripemd-160	43fea8264185b78c352870436fac51eeedd810e6

1388 as geometric shapes

Circle

Radius = n

Diameter	2776
Circumference	8721.0612063653
Area	6052416.4772175

Sphere

Radius = n

Volume	11201005427.171
Surface area	24209665.90887
Circumference	8721.0612063653

Square

Length = n

Perimeter	5552
Area	1926544
Diagonal	1962.9284245739

Cube

Length = n

Surface area	11559264
Volume	2674043072
Space diagonal	2404.0865209056

Equilateral Triangle

Length = n

Perimeter	4164
Area	834218.02275424
Altitude	1202.0432604528

Triangular Pyramid

Length = n

Surface area	834218.02275424
Volume	315138998.23268
Height	654.30947485795