20406981 (number)

20406981 is an odd 8-digits composite number following 20406980 and preceding 20406982. In scientific notation, it is written as 2.0406981 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 11256672 positive integers (up to 20406981) that are relatively prime to 20406981.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0406981 × 10^7
Engineering notation 2.0406981 × 10^6

Prime Factorization of 20406981

Prime Factorization 21 × 7 × 29 × 4787

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20406981
Product of the distinct prime numbers

The prime factorization of 20406981 is 21 × 7 × 29 × 4787. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 4, 97, 81, 101, 210, 3891, 4889, 32028, 6585, 635489, 952159, 1664161, 1407925, 40235890, 81567551, 867050199, 491171990, 8372890827, 5861733667

Basic calculations (n = 20406981)

Multiplication

n×y
n×2 40813962
n×3 61220943
n×4 81627924
n×5 102034905

Division

n÷y
n÷2 10203490.5
n÷3 6802327
n÷3 5101745.25
n÷5 4081396.2

Exponentiation

ny
n2 416444873534361
n3 8.4983826217631E+21
n4 1.7342633269305E+29
n5 3.5391078761667E+36

Nth Root

y√n
2√n 4517.4086598403
3√n 273.2706061029
4√n 67.211670562785
5√n 28.970484076819

Divisors of 20406981

1, 7, 21, 29, 147, 203, 609, 4263, 4787, 33509, 100527, 138823, 703689, 971761, 2915283, 20406981

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 -20406980
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 20406981 can be divided by 16 positive divisors. The sum of these divisors (counting 20406981) is 1, the average is 0.0625.

Base conversion 20406981

Base System Value
2 Binary 1001101110110001011000101
3 Ternary 1102101210010010
4 Quaternary 1031312023011
5 Quinary 20211010411
6 Senary 2005220433
8 Octal 115661305
10 Decimal 20406981
12 Duodecimal 6a01719
16 Hexadecimal 13762c5
20 Vigesimal 67ah91
36 Base36 c5e4l

Cryptographic Hash Functions

md5 ef60219fa4a43c6467224d4c8ab67cb7
sha1 dc6aa362e854035cc983eb792294bfa20297ea0b
sha256 4f1df6f16f38dea3d3ff0fd448dba7a30cb0194e4104867c582e696397945467
sha512 857f80dc6161350e036ff8649ecf36b33f25e5d5ea5aac18d20760abb587bcc9e254e7655ed6e72f46a998f93ba536113932c22cc91b4bca2db3afd7faf6d326
ripemd-160 ed39b31793a273924284990ad3fda8e148e92798

20406981 as geometric shapes

Circle

Radius = n
Diameter 40813962
Circumference 128220843.18309
Area 1.3083001553207E+15

Sphere

Radius = n
Volume 3.5597941882568E+22
Surface area 5.2332006212827E+15
Circumference 128220843.18309

Square

Length = n
Perimeter 81627924
Area 416444873534361
Diagonal 28859829.29729

Cube

Length = n
Surface area 2498669241206166
Volume 8.4983826217631E+21
Space diagonal 35345927.921093

Equilateral Triangle

Length = n
Perimeter 61220943
Area 1.8032591987828E+14
Altitude 17672963.960546

Triangular Pyramid

Length = n
Surface area 1.8032591987828E+14
Volume 1.0015439968278E+21
Height 9619943.0990967