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

20121581 (number)

20121581 is an odd 8-digits prime number following 20121580 and preceding 20121582. In scientific notation, it is written as 2.0121581 × 10^7. The sum of its digits is 20. It has a total of 1 prime factors and 2 positive divisors. There are 20121580 positive integers (up to 20121581) that are relatively prime to 20121581.

Interesting facts

20121581 has 2 divisors, whose sum is 20121582
The reverse of 20121581 is 18512102
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2

Name

Name	twenty million one hundred twenty-one thousand five hundred eighty-one

Notation

Scientific notation	2.0121581 × 10^7
Engineering notation	2.0121581 × 10^6

Prime Factorization of 20121581

Prime Factorization 20121581

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	20121581	Product of the distinct prime numbers

The prime factorization of 20121581 is 20121581. Since it has a total of 1 prime factors.

Most popular turbo-numbers

8, 9, 9, 34, 67, 787, 3534, 8392, 84662, 90733, 7194, 476928, 2595322, 9413496, 35557940, 81693686, 234928936, 224110197, 8287158391, 8963232780

Basic calculations (n = 20121581)

Multiplication

n×y

n×2	40243162
n×3	60364743
n×4	80486324
n×5	100607905

Division

n÷y

n÷2	10060790.5
n÷3	6707193.6666667
n÷3	5030395.25
n÷5	4024316.2

Exponentiation

n^y

n²	404878021939561
n³	8.1467859135767E+21
n⁴	1.6392621264969E+29
n⁵	3.298454565854E+36

Nth Root

^y√n

²√n	4485.7085282038
³√n	271.99068685673
⁴√n	66.975432273363
⁵√n	28.888994103806

Divisors of 20121581

1, 20121581

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	20121582	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	10060791	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	4485.7086396689	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999006042	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20121581 can be divided by 2 positive divisors. The sum of these divisors (counting 20121581) is 20121582, the average is 10060791.

Base conversion 20121581

Base	System	Value
2	Binary	1001100110000011111101101
3	Ternary	1101212021121202
4	Quaternary	1030300133231
5	Quinary	20122342311
6	Senary	1555135245
8	Octal	114603755
10	Decimal	20121581
12	Duodecimal	68a4525
16	Hexadecimal	13307ed
20	Vigesimal	65f3j1
36	Base36	bz9wt

Cryptographic Hash Functions

md5	c9f29c882dce6787343256db1758134a
sha1	76f0b8423208433f8354ece7b3ced0618475b224
sha256	30d9f2ebc2a68a8f728049b0941bf41a32403bd7bef8a4f4707d7ecf7428c556
sha512	ddfb59fdc4438aa536b08055bfeab5640b4f579c345b317c3e683aff68c36394e4c688e61d85a33c4bf24e2aece47dd9cb8c3e765635924537aaaefd5eddcbe3
ripemd-160	46d9cae1007e36a111532044ba51202e82762e11

20121581 as geometric shapes

Circle

Radius = n

Diameter	40243162
Circumference	126427622.09642
Area	1.2719618193253E+15

Sphere

Radius = n

Volume	3.4125177035282E+22
Surface area	5.0878472773012E+15
Circumference	126427622.09642

Square

Length = n

Perimeter	80486324
Area	404878021939561
Diagonal	28456212.746589

Cube

Length = n

Surface area	2429268131637366
Volume	8.1467859135767E+21
Space diagonal	34851600.620613

Equilateral Triangle

Length = n

Perimeter	60364743
Area	1.7531732621683E+14
Altitude	17425800.310306

Triangular Pyramid

Length = n

Surface area	1.7531732621683E+14
Volume	9.6010792739418E+20
Height	9485404.2488629