21461985 (number)

21461985 is an odd 8-digits composite number following 21461984 and preceding 21461986. In scientific notation, it is written as 2.1461985 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 11411712 positive integers (up to 21461985) that are relatively prime to 21461985.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred sixty-one thousand nine hundred eighty-five

Notation

Scientific notation 2.1461985 × 10^7
Engineering notation 2.1461985 × 10^6

Prime Factorization of 21461985

Prime Factorization 3 × 15 × 937 × 509

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21461985
Product of the distinct prime numbers

The prime factorization of 21461985 is 3 × 15 × 937 × 509. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 1, 99, 34, 933, 626, 4563, 3902, 57036, 45087, 160845, 304844, 1309645, 9682589, 69642761, 21760915, 407433803, 331292418, 4934995352, 9597486256

Basic calculations (n = 21461985)

Multiplication

n×y
n×2 42923970
n×3 64385955
n×4 85847940
n×5 107309925

Division

n÷y
n÷2 10730992.5
n÷3 7153995
n÷3 5365496.25
n÷5 4292397

Exponentiation

ny
n2 460616800140225
n3 9.8857508553575E+21
n4 2.1216783657142E+29
n5 4.5535429259783E+36

Nth Root

y√n
2√n 4632.7081712536
3√n 277.90090579929
4√n 68.064000552815
5√n 29.264019491684

Divisors of 21461985

1, 3, 15, 45, 509, 937, 1527, 2811, 7635, 14055, 22905, 42165, 476933, 1430799, 7153995, 21461985

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 -21461984
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 21461985 can be divided by 16 positive divisors. The sum of these divisors (counting 21461985) is 1, the average is 0.0625.

Base conversion 21461985

Base System Value
2 Binary 1010001110111101111100001
3 Ternary 1111101101022100
4 Quaternary 1101313233201
5 Quinary 20443240420
6 Senary 2044001013
8 Octal 121675741
10 Decimal 21461985
12 Duodecimal 7230169
16 Hexadecimal 1477be1
20 Vigesimal 6e2ej5
36 Base36 cs069

Cryptographic Hash Functions

md5 655b882b8eecf019df3c9024aae42ac5
sha1 d3fc29d8b1dab48fa82d6d4d00ba1b4f24192084
sha256 4d41d793656f56ec1760de31356274e552db33ee1315207a3140d7a41b3cdbef
sha512 6c3a5fbb3518e4b1b3e210c9c72f1bf4b6a8c80b83d2e54b50528c7955c2dfc75bb2e4a9cb615831820ba29b058b55a8346f200b3c19ae456dbb81a734f2de06
ripemd-160 2b0a42456d1b01ac3c0cf22ab4acecda400960ff

21461985 as geometric shapes

Circle

Radius = n
Diameter 42923970
Circumference 134849628.81491
Area 1.4470703554406E+15

Sphere

Radius = n
Volume 4.140933634988E+22
Surface area 5.7882814217623E+15
Circumference 134849628.81491

Square

Length = n
Perimeter 85847940
Area 460616800140225
Diagonal 30351830.262448

Cube

Length = n
Surface area 2763700800841350
Volume 9.8857508553575E+21
Space diagonal 37173248.451281

Equilateral Triangle

Length = n
Perimeter 64385955
Area 1.9945292516567E+14
Altitude 18586624.225641

Triangular Pyramid

Length = n
Surface area 1.9945292516567E+14
Volume 1.1650469111573E+21
Height 10117276.754149