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

21139945 (number)

21139945 is an odd 8-digits composite number following 21139944 and preceding 21139946. In scientific notation, it is written as 2.1139945 × 10^7. The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors. There are 16911952 positive integers (up to 21139945) that are relatively prime to 21139945.

Interesting facts

21139945 has 4 divisors, whose sum is 25367940
The reverse of 21139945 is 54993112
Previous prime number is 5

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7

Name

Name	twenty-one million one hundred thirty-nine thousand nine hundred forty-five

Notation

Scientific notation	2.1139945 × 10^7
Engineering notation	2.1139945 × 10^6

Prime Factorization of 21139945

Prime Factorization 5 × 4227989

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21139945	Product of the distinct prime numbers

The prime factorization of 21139945 is 5 × 4227989. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 10, 97, 4, 230, 895, 401, 2789, 59724, 92977, 350473, 1035, 7222636, 1924240, 91217391, 65660365, 647276485, 392209280, 9357604462, 6374552396

Basic calculations (n = 21139945)

Multiplication

n×y

n×2	42279890
n×3	63419835
n×4	84559780
n×5	105699725

Division

n÷y

n÷2	10569972.5
n÷3	7046648.3333333
n÷3	5284986.25
n÷5	4227989

Exponentiation

n^y

n²	446897274603025
n³	9.4473838057578E+21
n⁴	1.9971717404761E+29
n⁵	4.2220100749219E+36

Nth Root

^y√n

²√n	4597.819591937
³√n	276.50391469747
⁴√n	67.807223744503
⁵√n	29.175665465048

Divisors of 21139945

1, 5, 4227989, 21139945

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	-21139944	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 21139945 can be divided by 4 positive divisors. The sum of these divisors (counting 21139945) is 1, the average is 0.25.

Base conversion 21139945

Base	System	Value
2	Binary	1010000101001000111101001
3	Ternary	1110210000112221
4	Quaternary	1100221013221
5	Quinary	20402434240
6	Senary	2033034041
8	Octal	120510751
10	Decimal	21139945
12	Duodecimal	70b5921
16	Hexadecimal	14291e9
20	Vigesimal	6c29h5
36	Base36	cl3op

Cryptographic Hash Functions

md5	59baab65d222a6dbd41f5aecd04e95e1
sha1	b1b4455c06b954a0a0030704bf924022735ab0b0
sha256	a62bcb4c1bd20d4d6854633f582675cba8f5b81c4a07ceb48f354db8f25559c4
sha512	a269925ef6182b9da07bfa1dcd28e6c386738df0939b46ebf56c0ba656a28e3949ef348c06dc9937256d7e0098d3bebe183b70cf871d1dfc26db47b697f0b65c
ripemd-160	eacae2b744bf7ef6b0962bb8135323ee62844363

21139945 as geometric shapes

Circle

Radius = n

Diameter	42279890
Circumference	132826191.81858
Area	1.4039691948022E+15

Sphere

Radius = n

Volume	3.9573108746416E+22
Surface area	5.6158767792087E+15
Circumference	132826191.81858

Square

Length = n

Perimeter	84559780
Area	446897274603025
Diagonal	29896396.926821

Cube

Length = n

Surface area	2681383647618150
Volume	9.4473838057578E+21
Space diagonal	36615458.809212

Equilateral Triangle

Length = n

Perimeter	63419835
Area	1.9351219634412E+14
Altitude	18307729.404606

Triangular Pyramid

Length = n

Surface area	1.9351219634412E+14
Volume	1.1133848589206E+21
Height	9965465.6422738