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

21087947 (number)

21087947 is an odd 8-digits composite number following 21087946 and preceding 21087948. In scientific notation, it is written as 2.1087947 × 10^7. The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors. There are 20901216 positive integers (up to 21087947) that are relatively prime to 21087947.

Interesting facts

21087947 has 4 divisors, whose sum is 21274680
The reverse of 21087947 is 74978012
Previous prime number is 113

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2

Name

Name	twenty-one million eighty-seven thousand nine hundred forty-seven

Notation

Scientific notation	2.1087947 × 10^7
Engineering notation	2.1087947 × 10^6

Prime Factorization of 21087947

Prime Factorization 113 × 186619

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21087947	Product of the distinct prime numbers

The prime factorization of 21087947 is 113 × 186619. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 3, 30, 31, 865, 277, 707, 9199, 37164, 48043, 887178, 923546, 9791765, 1728356, 47037130, 51198605, 476497484, 468962895, 5509125091, 6948737396

Basic calculations (n = 21087947)

Multiplication

n×y

n×2	42175894
n×3	63263841
n×4	84351788
n×5	105439735

Division

n÷y

n÷2	10543973.5
n÷3	7029315.6666667
n÷3	5271986.75
n÷5	4217589.4

Exponentiation

n^y

n²	444701508674809
n³	9.3778418457544E+21
n⁴	1.9775943181765E+29
n⁵	4.1703404169207E+36

Nth Root

^y√n

²√n	4592.1614736418
³√n	276.27702267
⁴√n	67.765488809879
⁵√n	29.161298624617

Divisors of 21087947

1, 113, 186619, 21087947

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	-21087946	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 21087947 can be divided by 4 positive divisors. The sum of these divisors (counting 21087947) is 1, the average is 0.25.

Base conversion 21087947

Base	System	Value
2	Binary	1010000011100011011001011
3	Ternary	1110200101020002
4	Quaternary	1100130123023
5	Quinary	20344303242
6	Senary	2031553215
8	Octal	120343313
10	Decimal	21087947
12	Duodecimal	708b80b
16	Hexadecimal	141c6cb
20	Vigesimal	6bfjh7
36	Base36	cjzkb

Cryptographic Hash Functions

md5	130e3533f3c0e6e516976377b750f701
sha1	668f5ff02af9da95dd2dfcfa62d1e604484469a3
sha256	a57885e2e8eba7d8ba81f3630c89694e85119f966598ab7cd116c704bdf833a1
sha512	94bcd9e4699c9868449701787c47bb8daaa226c4934cc228f56d609eeeddf7109e6be21edef17dbb9f91f365b208dcb3e0eb2759ae8adb8e707a5b907828c0fc
ripemd-160	669b658f8567bb8d6a0eb44f45e372836415b226

21087947 as geometric shapes

Circle

Radius = n

Diameter	42175894
Circumference	132499478.74898
Area	1.3970709926931E+15

Sphere

Radius = n

Volume	3.9281812065532E+22
Surface area	5.5882839707723E+15
Circumference	132499478.74898

Square

Length = n

Perimeter	84351788
Area	444701508674809
Diagonal	29822860.650005

Cube

Length = n

Surface area	2668209052048854
Volume	9.3778418457544E+21
Space diagonal	36525395.63132

Equilateral Triangle

Length = n

Perimeter	63263841
Area	1.9256140180683E+14
Altitude	18262697.81566

Triangular Pyramid

Length = n

Surface area	1.9256140180683E+14
Volume	1.105189260338E+21
Height	9940953.5500017