21381285 (number)

21381285 is an odd 8-digits composite number following 21381284 and preceding 21381286. In scientific notation, it is written as 2.1381285 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 11370240 positive integers (up to 21381285) that are relatively prime to 21381285.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred eighty-one thousand two hundred eighty-five

Notation

Scientific notation 2.1381285 × 10^7
Engineering notation 2.1381285 × 10^6

Prime Factorization of 21381285

Prime Factorization 3 × 5 × 379 × 3761

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21381285
Product of the distinct prime numbers

The prime factorization of 21381285 is 3 × 5 × 379 × 3761. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 4, 5, 38, 677, 557, 4604, 8812, 40736, 10185, 383836, 547843, 2095259, 9582632, 78522856, 42673274, 967427880, 574140682, 7701525285, 4746044202

Basic calculations (n = 21381285)

Multiplication

n×y
n×2 42762570
n×3 64143855
n×4 85525140
n×5 106906425

Division

n÷y
n÷2 10690642.5
n÷3 7127095
n÷3 5345321.25
n÷5 4276257

Exponentiation

ny
n2 457159348251225
n3 9.7746543153737E+21
n4 2.0899466969348E+29
n5 4.4685745961973E+36

Nth Root

y√n
2√n 4623.9901600241
3√n 277.55215317154
4√n 67.999927647198
5√n 29.241978973131

Divisors of 21381285

1, 3, 5, 15, 379, 1137, 1895, 3761, 5685, 11283, 18805, 56415, 1425419, 4276257, 7127095, 21381285

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 -21381284
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 21381285 can be divided by 16 positive divisors. The sum of these divisors (counting 21381285) is 1, the average is 0.0625.

Base conversion 21381285

Base System Value
2 Binary 1010001100100000010100101
3 Ternary 1111020021121110
4 Quaternary 1101210002211
5 Quinary 20433200120
6 Senary 2042135233
8 Octal 121440245
10 Decimal 21381285
12 Duodecimal 71b1519
16 Hexadecimal 14640a5
20 Vigesimal 6dcd45
36 Base36 cq9wl

Cryptographic Hash Functions

md5 6dc38ea263cb67c852e939b594a6c3a2
sha1 89991cb7772ffe2b8a5a6cff7a935c79f336256e
sha256 f96016bf13c7741bf5d616b2258d866f6f358d180ae5f72e3b77a0c8e47cd165
sha512 4a02897f1d812cdd9f43d8136f6267c4f6c241a196302b2ef3f24937698fc99736f05421c5f509d6580fb8d7c322e77cdf9437cf03eb15cf0b59e751d770bd88
ripemd-160 0cd51bd7e17cedd6b2f6276bca39ea1f466ba5c0

21381285 as geometric shapes

Circle

Radius = n
Diameter 42762570
Circumference 134342575.76062
Area 1.4362084499859E+15

Sphere

Radius = n
Volume 4.094397625141E+22
Surface area 5.7448337999438E+15
Circumference 134342575.76062

Square

Length = n
Perimeter 85525140
Area 457159348251225
Diagonal 30237703.227964

Cube

Length = n
Surface area 2742956089507350
Volume 9.7746543153737E+21
Space diagonal 37033471.95111

Equilateral Triangle

Length = n
Perimeter 64143855
Area 1.9795580458155E+14
Altitude 18516735.975555

Triangular Pyramid

Length = n
Surface area 1.9795580458155E+14
Volume 1.1519540583592E+21
Height 10079234.409321