21409 (number)

21409 is an odd 5-digits composite number following 21408 and preceding 21410. In scientific notation, it is written as 2.1409 × 10^4. The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors. There are 21060 positive integers (up to 21409) that are relatively prime to 21409.

Interesting facts

Basic properties

Name

Name twenty-one thousand four hundred nine

Notation

Scientific notation 2.1409 × 10^4
Engineering notation 2.1409 × 10^3

Prime Factorization of 21409

Prime Factorization 79 × 271

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 21409
Product of the distinct prime numbers

The prime factorization of 21409 is 79 × 271. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 6, 72, 23, 521, 484, 9170, 4821, 7762, 31057, 896796, 98623, 3613978, 6442640, 85531309, 41375355, 972573694, 88222102, 3070605849, 3981197555

Basic calculations (n = 21409)

Multiplication

n×y
n×2 42818
n×3 64227
n×4 85636
n×5 107045

Division

n÷y
n÷2 10704.5
n÷3 7136.3333333333
n÷3 5352.25
n÷5 4281.8

Exponentiation

ny
n2 458345281
n3 9812714120929
n4 210080396614968961
n5 4.4976112111299E+21

Nth Root

y√n
2√n 146.31814651642
3√n 27.76720249291
4√n 12.096203806005
5√n 7.3471562578869

Divisors of 21409

1, 79, 271, 21409

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 -21408
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 21409 can be divided by 4 positive divisors. The sum of these divisors (counting 21409) is 1, the average is 0.25.

Base conversion 21409

Base System Value
2 Binary 101001110100001
3 Ternary 1002100221
4 Quaternary 11032201
5 Quinary 1141114
6 Senary 243041
8 Octal 51641
10 Decimal 21409
12 Duodecimal 10481
16 Hexadecimal 53a1
20 Vigesimal 2da9
36 Base36 gip

Cryptographic Hash Functions

md5 46c33e6efedb03b3ac749a2e03dc986c
sha1 9c7ff161958f6e64066bb23c74042391dea8beb3
sha256 bb8545d7a23331dc1ae45aefc730b5dad5f1e5831af6eba63e2848bfed2cae40
sha512 92b43cba8f71f27c3d753b19ea0570dcd00778fe971d1078b9ee0c97c6c377fb153daf7e8e6ff113ae604b38a7c43f407da004f8c52413a2739eb99114ed48b2
ripemd-160 c22c76439040980b5858e723777ecaa69d31cdbc

21409 as geometric shapes

Circle

Radius = n
Diameter 42818
Circumference 134516.71424141
Area 1439934167.5971

Sphere

Radius = n
Volume 41103400792116
Surface area 5759736670.3886
Circumference 134516.71424141

Square

Length = n
Perimeter 85636
Area 458345281
Diagonal 30276.898156846

Cube

Length = n
Surface area 2750071686
Volume 9812714120929
Space diagonal 37081.475739242

Equilateral Triangle

Length = n
Perimeter 64227
Area 198469328.52536
Altitude 18540.737869621

Triangular Pyramid

Length = n
Surface area 198469328.52536
Volume 1156439449459
Height 10092.299385615