20180981 (number)

20180981 is an odd 8-digits composite number following 20180980 and preceding 20180982. In scientific notation, it is written as 2.0180981 × 10^7. The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors. There are 20091852 positive integers (up to 20180981) that are relatively prime to 20180981.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0180981 × 10^7
Engineering notation 2.0180981 × 10^6

Prime Factorization of 20180981

Prime Factorization 227 × 88903

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20180981
Product of the distinct prime numbers

The prime factorization of 20180981 is 227 × 88903. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 9, 17, 21, 93, 126, 1842, 6683, 38890, 4593, 886730, 880211, 2723205, 2659047, 13582045, 39426042, 157590103, 92703847, 5964399484, 3090913862

Basic calculations (n = 20180981)

Multiplication

n×y
n×2 40361962
n×3 60542943
n×4 80723924
n×5 100904905

Division

n÷y
n÷2 10090490.5
n÷3 6726993.6666667
n÷3 5045245.25
n÷5 4036196.2

Exponentiation

ny
n2 407271994122361
n3 8.2191483752155E+21
n4 1.658704771964E+29
n5 3.3474289487616E+36

Nth Root

y√n
2√n 4492.3246766012
3√n 272.25806768169
4√n 67.024806427182
5√n 28.906030374802

Divisors of 20180981

1, 227, 88903, 20180981

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 -20180980
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 20180981 can be divided by 4 positive divisors. The sum of these divisors (counting 20180981) is 1, the average is 0.25.

Base conversion 20180981

Base System Value
2 Binary 1001100111110111111110101
3 Ternary 1101222022002202
4 Quaternary 1030332333311
5 Quinary 20131242411
6 Senary 2000314245
8 Octal 114767765
10 Decimal 20180981
12 Duodecimal 6912985
16 Hexadecimal 133eff5
20 Vigesimal 662c91
36 Base36 c0jqt

Cryptographic Hash Functions

md5 3d982f9cdf5f2115d9ac96d683c5b7bc
sha1 4397c4e463f7a300201a764d497e6d693a8757ff
sha256 124330ff9b7ded8e451973f4f8df56665e82a0c34c7d2e1104ef6cf7669c7e57
sha512 68db7ecb0641c5401c9a7c731f842cd5dcc0fa3820750d040639f9b4e6ae9d35946d0b03ac34cdd92bd5787a8e182b2c3890c4ad7b04055373d772c8f7d92891
ripemd-160 e372ed47938b8427f705c42baffd8c761557dd28

20180981 as geometric shapes

Circle

Radius = n
Diameter 40361962
Circumference 126800843.30367
Area 1.2794827047477E+15

Sphere

Radius = n
Volume 3.4428288205789E+22
Surface area 5.1179308189907E+15
Circumference 126800843.30367

Square

Length = n
Perimeter 80723924
Area 407271994122361
Diagonal 28540217.032194

Cube

Length = n
Surface area 2443631964734166
Volume 8.2191483752155E+21
Space diagonal 34954484.438582

Equilateral Triangle

Length = n
Perimeter 60542943
Area 1.7635394657996E+14
Altitude 17477242.219291

Triangular Pyramid

Length = n
Surface area 1.7635394657996E+14
Volume 9.6863592528221E+20
Height 9513405.6773979