21691881 (number)

21691881 is an odd 8-digits composite number following 21691880 and preceding 21691882. In scientific notation, it is written as 2.1691881 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors. There are 13229568 positive integers (up to 21691881) that are relatively prime to 21691881.

Interesting facts

Basic properties

Name

Name twenty-one million six hundred ninety-one thousand eight hundred eighty-one

Notation

Scientific notation 2.1691881 × 10^7
Engineering notation 2.1691881 × 10^6

Prime Factorization of 21691881

Prime Factorization 27081 × 3 × 3 × 89

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 7230627
Product of the distinct prime numbers

The prime factorization of 21691881 is 27081 × 3 × 3 × 89. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 4, 64, 62, 456, 414, 3416, 807, 59107, 49365, 440639, 840940, 5103345, 8835707, 55405134, 5334175, 923407354, 390718243, 2330790998, 5689078523

Basic calculations (n = 21691881)

Multiplication

n×y
n×2 43383762
n×3 65075643
n×4 86767524
n×5 108459405

Division

n÷y
n÷2 10845940.5
n÷3 7230627
n÷3 5422970.25
n÷5 4338376.2

Exponentiation

ny
n2 470537701318161
n3 1.0206847823007E+22
n4 2.2140572836178E+29
n5 4.802706712342E+36

Nth Root

y√n
2√n 4657.4543476023
3√n 278.8896545948
4√n 68.245544525649
5√n 29.326446510871

Divisors of 21691881

1, 3, 9, 89, 267, 801, 27081, 81243, 243729, 2410209, 7230627, 21691881

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21691880
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21691881 can be divided by 12 positive divisors. The sum of these divisors (counting 21691881) is 1, the average is 0.083333333333333.

Base conversion 21691881

Base System Value
2 Binary 1010010101111110111101001
3 Ternary 1111211001200000
4 Quaternary 1102233313221
5 Quinary 21023120011
6 Senary 2052533213
8 Octal 122576751
10 Decimal 21691881
12 Duodecimal 7321209
16 Hexadecimal 14afde9
20 Vigesimal 6fb9e1
36 Base36 cwxk9

Cryptographic Hash Functions

md5 148af582238b34177adacde575429ac4
sha1 efc36caf5bfdaf28ab3cc435c9b180be42a75266
sha256 3342b91ef9717b34c02b24356c760216ab9c94e0004f3bf0eeea78da091e63c4
sha512 f0ff96aa7a2910a2ba8a1fb89785e1b396f746fa2efb6fa66a6b5d5d8b16974ecc9ac29c8da106ff3808fea09abc6169576298aa728185a21d9f82f580d334a2
ripemd-160 b5866e2c6b8f4257b160a20c9a3153b394dfd8d0

21691881 as geometric shapes

Circle

Radius = n
Diameter 43383762
Circumference 136294107.98429
Area 1.4782377856982E+15

Sphere

Radius = n
Volume 4.2754344182757E+22
Surface area 5.9129511427927E+15
Circumference 136294107.98429

Square

Length = n
Perimeter 86767524
Area 470537701318161
Diagonal 30676952.303583

Cube

Length = n
Surface area 2823226207908966
Volume 1.0206847823007E+22
Space diagonal 37571440.003738

Equilateral Triangle

Length = n
Perimeter 65075643
Area 2.0374880138993E+14
Altitude 18785720.001869

Triangular Pyramid

Length = n
Surface area 2.0374880138993E+14
Volume 1.2028885516979E+21
Height 10225650.767861