Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

21491438 (number)

21491438 is an even 8-digits composite number following 21491437 and preceding 21491439. In scientific notation, it is written as 2.1491438 × 10^7. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 10736640 positive integers (up to 21491438) that are relatively prime to 21491438.

Interesting facts

21491438 has 8 divisors, whose sum is 32264400
The reverse of 21491438 is 83419412
Previous prime number is 1399

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 32
Digital Root 5

Name

Name	twenty-one million four hundred ninety-one thousand four hundred thirty-eight

Notation

Scientific notation	2.1491438 × 10^7
Engineering notation	2.1491438 × 10^6

Prime Factorization of 21491438

Prime Factorization 2 × 1399 × 7681

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21491438	Product of the distinct prime numbers

The prime factorization of 21491438 is 2 × 1399 × 7681. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 5, 84, 92, 109, 474, 7553, 6223, 14604, 20026, 19261, 278438, 4338056, 2002967, 70650007, 6077918, 217914229, 121884845, 8068427141, 2101743214

Basic calculations (n = 21491438)

Multiplication

n×y

n×2	42982876
n×3	64474314
n×4	85965752
n×5	107457190

Division

n÷y

n÷2	10745719
n÷3	7163812.6666667
n÷3	5372859.5
n÷5	4298287.6

Exponentiation

n^y

n²	461881907307844
n³	9.9265063742283E+21
n⁴	2.1333489629833E+29
n⁵	4.584873697032E+36

Nth Root

^y√n

²√n	4635.8858916069
³√n	278.02797192792
⁴√n	68.087340171334
⁵√n	29.272047084867

Divisors of 21491438

1, 2, 1399, 2798, 7681, 15362, 10745719, 21491438

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21491437	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491438 can be divided by 8 positive divisors. The sum of these divisors (counting 21491438) is 1, the average is 0.125.

Base conversion 21491438

Base	System	Value
2	Binary	1010001111110111011101110
3	Ternary	1111102212201012
4	Quaternary	1101332323232
5	Quinary	21000211223
6	Senary	2044345222
8	Octal	121767356
10	Decimal	21491438
12	Duodecimal	7245212
16	Hexadecimal	147eeee
20	Vigesimal	6e68bi
36	Base36	csmwe

Cryptographic Hash Functions

md5	4a35b567d5c2ffd0921f510651687a5c
sha1	dd6b157ec56000ad39079a0ea8cb365b3844dd01
sha256	e059b2f45d5d1c3231d26764eea2b2022e78b31f7984b8442d25061064d049a5
sha512	b82649514bd3cfea3688e778268653f3f4620a0b24bb177b193a8563fc3125c0d0fb7345b227d32c8307a209422097827314626930c0d7b827e4533211d3412f
ripemd-160	bc83cf63edf62d450f6c8e02450b1d13c4b7ee56

21491438 as geometric shapes

Circle

Radius = n

Diameter	42982876
Circumference	135034687.47176
Area	1.4510448068244E+15

Sphere

Radius = n

Volume	4.1580052668117E+22
Surface area	5.8041792272975E+15
Circumference	135034687.47176

Square

Length = n

Perimeter	85965752
Area	461881907307844
Diagonal	30393483.094501

Cube

Length = n

Surface area	2771291443847064
Volume	9.9265063742283E+21
Space diagonal	37224262.543716

Equilateral Triangle

Length = n

Perimeter	64474314
Area	2.000007326385E+14
Altitude	18612131.271858

Triangular Pyramid

Length = n

Surface area	2.000007326385E+14
Volume	1.1698499951181E+21
Height	10131161.0315