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

1387981 (number)

1387981 is an odd 7-digits composite number following 1387980 and preceding 1387982. In scientific notation, it is written as 1.387981 × 10^6. The sum of its digits is 37. It has a total of 4 prime factors and 16 positive divisors. There are 1102464 positive integers (up to 1387981) that are relatively prime to 1387981.

Interesting facts

1387981 has 16 divisors, whose sum is 1707264
The reverse of 1387981 is 1897831
Previous prime number is 37

Basic properties

Is Prime? no
Number parity odd
Number length 7
Sum of Digits 37
Digital Root 1

Name

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

Notation

Scientific notation	1.387981 × 10^6
Engineering notation	1.387981 × 10^6

Prime Factorization of 1387981

Prime Factorization 7 × 23 × 37 × 233

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	1387981	Product of the distinct prime numbers

The prime factorization of 1387981 is 7 × 23 × 37 × 233. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 8, 52, 69, 612, 168, 1470, 4769, 51538, 29423, 877170, 883126, 2113003, 5797109, 95135687, 34814940, 843329772, 637490484, 4481500683, 5520526769

Basic calculations (n = 1387981)

Multiplication

n×y

n×2	2775962
n×3	4163943
n×4	5551924
n×5	6939905

Division

n÷y

n÷2	693990.5
n÷3	462660.33333333
n÷3	346995.25
n÷5	277596.2

Exponentiation

n^y

n²	1926491256361
n³	2673933260495197141
n⁴	3.7113685608354E+24
n⁵	5.1513090464369E+30

Nth Root

^y√n

²√n	1178.1260543762
³√n	111.54784221845
⁴√n	34.323840903608
⁵√n	16.922974663122

Divisors of 1387981

1, 7, 23, 37, 161, 233, 259, 851, 1631, 5359, 5957, 8621, 37513, 60347, 198283, 1387981

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-1387980	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1387981 can be divided by 16 positive divisors. The sum of these divisors (counting 1387981) is 1, the average is 0.0625.

Base conversion 1387981

Base	System	Value
2	Binary	101010010110111001101
3	Ternary	2121111221201
4	Quaternary	11102313031
5	Quinary	323403411
6	Senary	45425501
8	Octal	5226715
10	Decimal	1387981
12	Duodecimal	56b291
16	Hexadecimal	152dcd
20	Vigesimal	8d9j1
36	Base36	tqz1

Cryptographic Hash Functions

md5	ba3668938e2741154c1278c07d52b992
sha1	1a0a73a4c5abef2eb2f3ad2b0b99d8c9321d8c22
sha256	45e5c749c7bc3b0ea94cd0fd304dae3240463a4dbd6d30488ee71d7da1f65d05
sha512	0e06f97eb7e9765cad4c69b4ab861e87549cc548f774f0d66d6aceb4041116e263487296ea758e9ae65439389612755150131bb9ec8e1b1a2f431da61433e7a2
ripemd-160	4c4519e0896f24f0a5ede166a382c1fe985ab8c5

1387981 as geometric shapes

Circle

Radius = n

Diameter	2775962
Circumference	8720941.8258444
Area	6052250778188.7

Sphere

Radius = n

Volume	1.1200545449815E+19
Surface area	24209003112755
Circumference	8720941.8258444

Square

Length = n

Perimeter	5551924
Area	1926491256361
Diagonal	1962901.5545162

Cube

Length = n

Surface area	11558947538166
Volume	2673933260495197141
Space diagonal	2404053.6119403

Equilateral Triangle

Length = n

Perimeter	4163943
Area	834195184088.61
Altitude	1202026.8059701

Triangular Pyramid

Length = n

Surface area	834195184088.61
Volume	3.1512605682273E+17
Height	654300.51817206