1387988 (number)

1387988 is an even 7-digits composite number following 1387987 and preceding 1387989. In scientific notation, it is written as 1.387988 × 10^6. The sum of its digits is 44. It has a total of 5 prime factors and 24 positive divisors. There are 563328 positive integers (up to 1387988) that are relatively prime to 1387988.

Interesting facts

Basic properties

Name

Name one million three hundred eighty-seven thousand nine hundred eighty-eight

Notation

Scientific notation 1.387988 × 10^6
Engineering notation 1.387988 × 10^6

Prime Factorization of 1387988

Prime Factorization 2 × 2 × 7 × 19 × 2609

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 693994
Product of the distinct prime numbers

The prime factorization of 1387988 is 2 × 2 × 7 × 19 × 2609. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 5, 28, 18, 179, 961, 1403, 8117, 10474, 12123, 748805, 576377, 3754098, 8636907, 11248728, 1673419, 855728248, 30274095, 9265707608, 2194175066

Basic calculations (n = 1387988)

Multiplication

n×y
n×2 2775976
n×3 4163964
n×4 5551952
n×5 6939940

Division

n÷y
n÷2 693994
n÷3 462662.66666667
n÷3 346997
n÷5 277597.6

Exponentiation

ny
n2 1926510688144
n3 2673973717015614272
n4 3.7114434315331E+24
n5 5.1514389456467E+30

Nth Root

y√n
2√n 1178.1290251921
3√n 111.54802974109
4√n 34.323884179854
5√n 16.922991732604

Divisors of 1387988

1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 2609, 5218, 10436, 18263, 36526, 49571, 73052, 99142, 198284, 346997, 693994, 1387988

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 -1387987
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 1387988 can be divided by 24 positive divisors. The sum of these divisors (counting 1387988) is 1, the average is 0.041666666666667.

Base conversion 1387988

Base System Value
2 Binary 101010010110111010100
3 Ternary 2121111221222
4 Quaternary 11102313110
5 Quinary 323403423
6 Senary 45425512
8 Octal 5226724
10 Decimal 1387988
12 Duodecimal 56b298
16 Hexadecimal 152dd4
20 Vigesimal 8d9j8
36 Base36 tqz8

Cryptographic Hash Functions

md5 a6878d4fd93f506657d4ee152c63aae7
sha1 c75edbc25bb717bc2783ca309c7491778ab95858
sha256 3205a7ed46298d4657db7c9711a32f151f96f105c35e0340be619c83abc34b8e
sha512 788829ce50d26cbc2cf8e208782bbd5e3cce536453e8766b27dcc8b36deef48b46690b39350b428d1a708e81f265f83435267e2fb62237c70847067a22149cd4
ripemd-160 c6574679b3c881f86013e1f927e7d33a90f1da6b

1387988 as geometric shapes

Circle

Radius = n
Diameter 2775976
Circumference 8720985.8081416
Area 6052311824935.4

Sphere

Radius = n
Volume 1.1200714913691E+19
Surface area 24209247299742
Circumference 8720985.8081416

Square

Length = n
Perimeter 5551952
Area 1926510688144
Diagonal 1962911.4540111

Cube

Length = n
Surface area 11559064128864
Volume 2673973717015614272
Space diagonal 2404065.7362959

Equilateral Triangle

Length = n
Perimeter 4163964
Area 834203598297.47
Altitude 1202032.868148

Triangular Pyramid

Length = n
Surface area 834203598297.47
Volume 3.1513082466939E+17
Height 654303.8180037