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

21491921 (number)

21491921 is an odd 8-digits composite number following 21491920 and preceding 21491922. In scientific notation, it is written as 2.1491921 × 10^7. The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors. There are 19538100 positive integers (up to 21491921) that are relatively prime to 21491921.

Interesting facts

21491921 has 4 divisors, whose sum is 23445744
The reverse of 21491921 is 12919412
Previous prime number is 11

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

Name	twenty-one million four hundred ninety-one thousand nine hundred twenty-one

Notation

Scientific notation	2.1491921 × 10^7
Engineering notation	2.1491921 × 10^6

Prime Factorization of 21491921

Prime Factorization 11 × 1953811

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21491921	Product of the distinct prime numbers

The prime factorization of 21491921 is 11 × 1953811. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 1, 60, 89, 27, 112, 4448, 2068, 48332, 24602, 274872, 559192, 4586753, 5091387, 31561356, 35277586, 66799461, 833981757, 825172094, 9164285470

Basic calculations (n = 21491921)

Multiplication

n×y

n×2	42983842
n×3	64475763
n×4	85967684
n×5	107459605

Division

n÷y

n÷2	10745960.5
n÷3	7163973.6666667
n÷3	5372980.25
n÷5	4298384.2

Exponentiation

n^y

n²	461902668270241
n³	9.9271756561532E+21
n⁴	2.1335407495517E+29
n⁵	4.5853889239646E+36

Nth Root

^y√n

²√n	4635.9379849174
³√n	278.03005471867
⁴√n	68.087722717957
⁵√n	29.272178656069

Divisors of 21491921

1, 11, 1953811, 21491921

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	-21491920	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 21491921 can be divided by 4 positive divisors. The sum of these divisors (counting 21491921) is 1, the average is 0.25.

Base conversion 21491921

Base	System	Value
2	Binary	1010001111111000011010001
3	Ternary	1111102220101002
4	Quaternary	1101333003101
5	Quinary	21000220141
6	Senary	2044351345
8	Octal	121770321
10	Decimal	21491921
12	Duodecimal	7245555
16	Hexadecimal	147f0d1
20	Vigesimal	6e69g1
36	Base36	csn9t

Cryptographic Hash Functions

md5	045a7ce1d3051f11c58d5e9f6f694e84
sha1	4b510e1b36312e495f39c4b50c6454da36d842f7
sha256	b12b26b0166b4eb806882731175fef9664cadb6acbb2c66dde6e4af46b48407e
sha512	dc1222703bd2f7ed2ad953a44baeb5c66c22a7207bf708c9ad3aa06824f26f260e7afe14ba27905ce5b40a4b1df231cca30b1107fdac4a02cd8045bcafd3d763
ripemd-160	9b542ca941ed849c0fb3fb9a3938a46240b062df

21491921 as geometric shapes

Circle

Radius = n

Diameter	42983842
Circumference	135037722.25026
Area	1.4511100293113E+15

Sphere

Radius = n

Volume	4.1582856149689E+22
Surface area	5.8044401172452E+15
Circumference	135037722.25026

Square

Length = n

Perimeter	85967684
Area	461902668270241
Diagonal	30394166.159651

Cube

Length = n

Surface area	2771416009621446
Volume	9.9271756561532E+21
Space diagonal	37225099.124257

Equilateral Triangle

Length = n

Perimeter	64475763
Area	2.0000972239892E+14
Altitude	18612549.562128

Triangular Pyramid

Length = n

Surface area	2.0000972239892E+14
Volume	1.1699288707493E+21
Height	10131388.719884