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

20138978 (number)

20138978 is an even 8-digits composite number following 20138977 and preceding 20138979. In scientific notation, it is written as 2.0138978 × 10^7. The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors. There are 10069488 positive integers (up to 20138978) that are relatively prime to 20138978.

Interesting facts

20138978 has 4 divisors, whose sum is 30208470
The reverse of 20138978 is 87983102
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 38
Digital Root 2

Name

Name	twenty million one hundred thirty-eight thousand nine hundred seventy-eight

Notation

Scientific notation	2.0138978 × 10^7
Engineering notation	2.0138978 × 10^6

Prime Factorization of 20138978

Prime Factorization 2 × 10069489

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20138978	Product of the distinct prime numbers

The prime factorization of 20138978 is 2 × 10069489. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 10, 40, 13, 625, 442, 1785, 2632, 42444, 29845, 350643, 3881, 6002034, 5337720, 21063240, 36685800, 297642164, 323620915, 4779311170, 6560773646

Basic calculations (n = 20138978)

Multiplication

n×y

n×2	40277956
n×3	60416934
n×4	80555912
n×5	100694890

Division

n÷y

n÷2	10069489
n÷3	6712992.6666667
n÷3	5034744.5
n÷5	4027795.6

Exponentiation

n^y

n²	405578434884484
n³	8.1679351774131E+21
n⁴	1.6449386684335E+29
n⁵	3.3127383654931E+36

Nth Root

^y√n

²√n	4487.6472677785
³√n	272.06905145661
⁴√n	66.98990422279
⁵√n	28.893987827796

Divisors of 20138978

1, 2, 10069489, 20138978

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-20138977	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20138978 can be divided by 4 positive divisors. The sum of these divisors (counting 20138978) is 1, the average is 0.25.

Base conversion 20138978

Base	System	Value
2	Binary	1001100110100101111100010
3	Ternary	1101220011111002
4	Quaternary	1030310233202
5	Quinary	20123421403
6	Senary	1555352002
8	Octal	114645742
10	Decimal	20138978
12	Duodecimal	68b2602
16	Hexadecimal	1334be2
20	Vigesimal	65h78i
36	Base36	bznc2

Cryptographic Hash Functions

md5	ca5362e32a9bbd0724e75fcd571ed804
sha1	ef731bbcc3592983eec1b988c366eaf961044d65
sha256	1335d8dbac6046f772a4f2dfeb34b9427e5b805a17f0853939465b87be4ca2b0
sha512	5c0cd80038d52b91f1fa7c73eac0618032c58f900c08d0617e5b5433fe03802cb25e81ccf7b1f6ca8ac5ad8673c1f9f54775b56dd2d51b29883ab456bc1f973b
ripemd-160	5c9314bb4d273ddbc3a3b5a328f79f1136e21748

20138978 as geometric shapes

Circle

Radius = n

Diameter	40277956
Circumference	126536930.67121
Area	1.2741622314875E+15

Sphere

Radius = n

Volume	3.4213766864478E+22
Surface area	5.0966489259502E+15
Circumference	126536930.67121

Square

Length = n

Perimeter	80555912
Area	405578434884484
Diagonal	28480815.819933

Cube

Length = n

Surface area	2433470609306904
Volume	8.1679351774131E+21
Space diagonal	34881733.108512

Equilateral Triangle

Length = n

Perimeter	60416934
Area	1.7562061391855E+14
Altitude	17440866.554256

Triangular Pyramid

Length = n

Surface area	1.7562061391855E+14
Volume	9.6260039204015E+20
Height	9493605.2733111