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

21091821 (number)

21091821 is an odd 8-digits composite number following 21091820 and preceding 21091822. In scientific notation, it is written as 2.1091821 × 10^7. The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors. There are 14014800 positive integers (up to 21091821) that are relatively prime to 21091821.

Interesting facts

21091821 has 8 divisors, whose sum is 28215264
The reverse of 21091821 is 12819012
Previous prime number is 307

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6

Name

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

Notation

Scientific notation	2.1091821 × 10^7
Engineering notation	2.1091821 × 10^6

Prime Factorization of 21091821

Prime Factorization 3 × 307 × 22901

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21091821	Product of the distinct prime numbers

The prime factorization of 21091821 is 3 × 307 × 22901. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 10, 7, 37, 135, 90, 615, 7326, 73252, 68895, 620441, 248064, 7409011, 1627267, 78246560, 68580357, 90965759, 789042632, 4813586124, 7791757646

Basic calculations (n = 21091821)

Multiplication

n×y

n×2	42183642
n×3	63275463
n×4	84367284
n×5	105459105

Division

n÷y

n÷2	10545910.5
n÷3	7030607
n÷3	5272955.25
n÷5	4218364.2

Exponentiation

n^y

n²	444864913096041
n³	9.3830111162023E+21
n⁴	1.9790479090395E+29
n⁵	4.1741724247885E+36

Nth Root

^y√n

²√n	4592.5832599965
³√n	276.29393962659
⁴√n	67.768600841367
⁵√n	29.162369971869

Divisors of 21091821

1, 3, 307, 921, 22901, 68703, 7030607, 21091821

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	-21091820	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 21091821 can be divided by 8 positive divisors. The sum of these divisors (counting 21091821) is 1, the average is 0.125.

Base conversion 21091821

Base	System	Value
2	Binary	1010000011101010111101101
3	Ternary	1110200120112120
4	Quaternary	1100131113231
5	Quinary	20344414241
6	Senary	2032023153
8	Octal	120352755
10	Decimal	21091821
12	Duodecimal	7091ab9
16	Hexadecimal	141d5ed
20	Vigesimal	6bg9b1
36	Base36	ck2jx

Cryptographic Hash Functions

md5	e983f91f87656f4e4fb29aa65c858370
sha1	4488dde33dadb75d6a2cbb770b4199080f232b16
sha256	023aefff5f4ba65e1e6766d804fce8ee4d7fe7d243276436e3a85b90cb28b40a
sha512	9fa0de437385105c1ae762622636b63f9d31573e162d17081a319bef6faa530513f658a25589cd7dc181c84d414bb3039c7392ba35da4b44addf53503465cea1
ripemd-160	10a8fdba22cc598cec221aa60644e8f207f8cd2e

21091821 as geometric shapes

Circle

Radius = n

Diameter	42183642
Circumference	132523819.80886
Area	1.3975843428224E+15

Sphere

Radius = n

Volume	3.930346505495E+22
Surface area	5.5903373712895E+15
Circumference	132523819.80886

Square

Length = n

Perimeter	84367284
Area	444864913096041
Diagonal	29828339.313346

Cube

Length = n

Surface area	2669189478576246
Volume	9.3830111162023E+21
Space diagonal	36532105.596148

Equilateral Triangle

Length = n

Perimeter	63275463
Area	1.9263215799676E+14
Altitude	18266052.798074

Triangular Pyramid

Length = n

Surface area	1.9263215799676E+14
Volume	1.1057984647026E+21
Height	9942779.7711152