20457981 (number)

20457981 is an odd 8-digits composite number following 20457980 and preceding 20457982. In scientific notation, it is written as 2.0457981 × 10^7. The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors. There are 13072752 positive integers (up to 20457981) that are relatively prime to 20457981.

Interesting facts

Basic properties

Name

Name twenty million four hundred fifty-seven thousand nine hundred eighty-one

Notation

Scientific notation 2.0457981 × 10^7
Engineering notation 2.0457981 × 10^6

Prime Factorization of 20457981

Prime Factorization 25929 × 3 × 263

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 20457981
Product of the distinct prime numbers

The prime factorization of 20457981 is 25929 × 3 × 263. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 20457981)

Multiplication

n×y
n×2 40915962
n×3 61373943
n×4 81831924
n×5 102289905

Division

n÷y
n÷2 10228990.5
n÷3 6819327
n÷3 5114495.25
n÷5 4091596.2

Exponentiation

ny
n2 418528986596361
n3 8.5622580557376E+21
n4 1.7516651262138E+29
n5 3.5835531870444E+36

Nth Root

y√n
2√n 4523.0499665602
3√n 273.49806432706
4√n 67.253624189037
5√n 28.984949909953

Divisors of 20457981

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20457980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20457981 can be divided by 8 positive divisors. The sum of these divisors (counting 20457981) is 1, the average is 0.125.

Base conversion 20457981

Base System Value
2 Binary 1001110000010100111111101
3 Ternary 1102111101002000
4 Quaternary 1032002213331
5 Quinary 20214123411
6 Senary 2010252513
8 Octal 116024775
10 Decimal 20457981
12 Duodecimal 6a27139
16 Hexadecimal 13829fd
20 Vigesimal 67h4j1
36 Base36 c6hh9

Cryptographic Hash Functions

md5 067697f1d2e19578d6d05b06e84dd664
sha1 a545003543638f9ab0991064cea242f0d39d310c
sha256 2cc132072e4bd9bae6ddb3fcf7e1f642442419bbe41cd394b81b057ec82c8dba
sha512 28a5ec0f68b2516f7ecd4971ea8b397478bd338b2b17a028614be663f51f4de9650261befd4358ce05955db579e739774c6a5ac5459d0acd344ef81e3b5b0e1a
ripemd-160 621030ab9952d21446850ecbf7821f877b46d2cb

20457981 as geometric shapes

Circle

Radius = n
Diameter 40915962
Circumference 128541285.63376
Area 1.3148475896055E+15

Sphere

Radius = n
Volume 3.5865502674727E+22
Surface area 5.259390358422E+15
Circumference 128541285.63376

Square

Length = n
Perimeter 81831924
Area 418528986596361
Diagonal 28931954.188971

Cube

Length = n
Surface area 2511173919578166
Volume 8.5622580557376E+21
Space diagonal 35434262.512279

Equilateral Triangle

Length = n
Perimeter 61373943
Area 1.812283673063E+14
Altitude 17717131.256139

Triangular Pyramid

Length = n
Surface area 1.812283673063E+14
Volume 1.0090717889135E+21
Height 9643984.729657