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

20971981 (number)

20971981 is an odd 8-digits composite number following 20971980 and preceding 20971982. In scientific notation, it is written as 2.0971981 × 10^7. The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors. There are 20958912 positive integers (up to 20971981) that are relatively prime to 20971981.

Interesting facts

20971981 has 4 divisors, whose sum is 20985052
The reverse of 20971981 is 18917902
Previous prime number is 1873

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

Name	twenty million nine hundred seventy-one thousand nine hundred eighty-one

Notation

Scientific notation	2.0971981 × 10^7
Engineering notation	2.0971981 × 10^6

Prime Factorization of 20971981

Prime Factorization 1873 × 11197

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20971981	Product of the distinct prime numbers

The prime factorization of 20971981 is 1873 × 11197. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 5, 49, 6, 882, 519, 2201, 3167, 14617, 67540, 893848, 524259, 8948354, 604319, 20783552, 92466069, 925776705, 112643699, 1420588060, 4863239798

Basic calculations (n = 20971981)

Multiplication

n×y

n×2	41943962
n×3	62915943
n×4	83887924
n×5	104859905

Division

n÷y

n÷2	10485990.5
n÷3	6990660.3333333
n÷3	5242995.25
n÷5	4194396.2

Exponentiation

n^y

n²	439823987064361
n³	9.223980300058E+21
n⁴	1.9344513959719E+29
n⁵	4.0569277921746E+36

Nth Root

^y√n

²√n	4579.5175510091
³√n	275.76966096844
⁴√n	67.672132750557
⁵√n	29.129155311271

Divisors of 20971981

1, 1873, 11197, 20971981

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	-20971980	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 20971981 can be divided by 4 positive divisors. The sum of these divisors (counting 20971981) is 1, the average is 0.25.

Base conversion 20971981

Base	System	Value
2	Binary	1010000000000000111001101
3	Ternary	1110110111011001
4	Quaternary	1100000013031
5	Quinary	20332100411
6	Senary	2025300301
8	Octal	120000715
10	Decimal	20971981
12	Duodecimal	7034691
16	Hexadecimal	14001cd
20	Vigesimal	6b19j1
36	Base36	chi31

Cryptographic Hash Functions

md5	f54dbdb766f3d3365088234f5b8147fd
sha1	b30045a1c493160b4a5994b99b06f5f0f2cf786e
sha256	f1510284f01695a47b0a49fdd73c4d4ecad3bf9407bc2f2cd6398daabdf73c43
sha512	5756f27d4a7ecd006f903b90d53a149f822cc70cb33e44ed58f45165561163b4942cad21ea5bfc2e9204710b8828340c3f846940f7cd6a97ea83e3757d2c7976
ripemd-160	d620491243b07f70cbcf1deae80bec6888a42f0b

20971981 as geometric shapes

Circle

Radius = n

Diameter	41943962
Circumference	131770842.88165
Area	1.381747806634E+15

Sphere

Radius = n

Volume	3.8637318330026E+22
Surface area	5.5269912265359E+15
Circumference	131770842.88165

Square

Length = n

Perimeter	83887924
Area	439823987064361
Diagonal	29658859.960031

Cube

Length = n

Surface area	2638943922386166
Volume	9.223980300058E+21
Space diagonal	36324536.627369

Equilateral Triangle

Length = n

Perimeter	62915943
Area	1.9044937299575E+14
Altitude	18162268.313685

Triangular Pyramid

Length = n

Surface area	1.9044937299575E+14
Volume	1.0870565032837E+21
Height	9886286.6533436