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

21497781 (number)

21497781 is an odd 8-digits composite number following 21497780 and preceding 21497782. In scientific notation, it is written as 2.1497781 × 10^7. The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors. There are 14320880 positive integers (up to 21497781) that are relatively prime to 21497781.

Interesting facts

21497781 has 8 divisors, whose sum is 28685664
The reverse of 21497781 is 18779412
Previous prime number is 2141

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

Name	twenty-one million four hundred ninety-seven thousand seven hundred eighty-one

Notation

Scientific notation	2.1497781 × 10^7
Engineering notation	2.1497781 × 10^6

Prime Factorization of 21497781

Prime Factorization 3 × 2141 × 3347

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21497781	Product of the distinct prime numbers

The prime factorization of 21497781 is 3 × 2141 × 3347. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 6, 44, 74, 221, 861, 1959, 5967, 52685, 35565, 80170, 305328, 1786761, 2416182, 74414448, 7173930, 479127481, 660431138, 1252884497, 8887386197

Basic calculations (n = 21497781)

Multiplication

n×y

n×2	42995562
n×3	64493343
n×4	85991124
n×5	107488905

Division

n÷y

n÷2	10748890.5
n÷3	7165927
n÷3	5374445.25
n÷5	4299556.2

Exponentiation

n^y

n²	462154587923961
n³	9.9352981193346E+21
n⁴	2.1358686313917E+29
n⁵	4.5916436082428E+36

Nth Root

^y√n

²√n	4636.5699606498
³√n	278.05532170256
⁴√n	68.092363453252
⁵√n	29.27377475594

Divisors of 21497781

1, 3, 2141, 3347, 6423, 10041, 7165927, 21497781

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	-21497780	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 21497781 can be divided by 8 positive divisors. The sum of these divisors (counting 21497781) is 1, the average is 0.125.

Base conversion 21497781

Base	System	Value
2	Binary	1010010000000011110110101
3	Ternary	1111110012102010
4	Quaternary	1102000132311
5	Quinary	21000412111
6	Senary	2044434433
8	Octal	122003665
10	Decimal	21497781
12	Duodecimal	7248a19
16	Hexadecimal	14807b5
20	Vigesimal	6e7491
36	Base36	csrsl

Cryptographic Hash Functions

md5	cb8ae64f5b3268a0b910bfad8d14c0d3
sha1	66c59c7bd1f1c39816973d2bffa9a993bf69efda
sha256	4e705885aa6b8bfefa629dd14a06c9a88969cf0610494647291fb763c1e51e2a
sha512	671a8565fedcba72f9638583e88ab816fa84e7648c275d1efd37dcb04886dd693628c954b2da2d361d1bcdce06e33d030b31123d7ffe7781b769f630a439dab5
ripemd-160	73831baa3ec75a76257931ba0fd1912637df0d12

21497781 as geometric shapes

Circle

Radius = n

Diameter	42995562
Circumference	135074541.71616
Area	1.4519014582447E+15

Sphere

Radius = n

Volume	4.1616879443901E+22
Surface area	5.8076058329789E+15
Circumference	135074541.71616

Square

Length = n

Perimeter	85991124
Area	462154587923961
Diagonal	30402453.451127

Cube

Length = n

Surface area	2772927527543766
Volume	9.9352981193346E+21
Space diagonal	37235248.941989

Equilateral Triangle

Length = n

Perimeter	64493343
Area	2.0011880680884E+14
Altitude	18617624.470994

Triangular Pyramid

Length = n

Surface area	2.0011880680884E+14
Volume	1.1708861122152E+21
Height	10134151.150376