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

81402021 (number)

81402021 is an odd 8-digits composite number following 81402020 and preceding 81402022. In scientific notation, it is written as 8.1402021 × 10^7. The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors. There are 54268008 positive integers (up to 81402021) that are relatively prime to 81402021.

Interesting facts

81402021 has 4 divisors, whose sum is 90446700
The reverse of 81402021 is 12020418
Previous prime number is 9

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9

Name

Name	eighty-one million four hundred two thousand twenty-one

Notation

Scientific notation	8.1402021 × 10^7
Engineering notation	8.1402021 × 10^6

Prime Factorization of 81402021

Prime Factorization 9 × 9044669

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81402021	Product of the distinct prime numbers

The prime factorization of 81402021 is 9 × 9044669. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 2, 81, 73, 80, 907, 3388, 839, 25132, 13246, 376616, 143917, 1474103, 8489469, 20155858, 57864245, 309262162, 341032403, 1762697744, 9828251590

Basic calculations (n = 81402021)

Multiplication

n×y

n×2	162804042
n×3	244206063
n×4	325608084
n×5	407010105

Division

n÷y

n÷2	40701010.5
n÷3	27134007
n÷3	20350505.25
n÷5	16280404.2

Exponentiation

n^y

n²	6626289022884441
n³	5.3939331819291E+23
n⁴	4.3907706214799E+31
n⁵	3.5741760233589E+39

Nth Root

^y√n

²√n	9022.306855788
³√n	433.38951059984
⁴√n	94.985824499175
⁵√n	38.205601146473

Divisors of 81402021

1, 9, 9044669, 81402021

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	-81402020	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 81402021 can be divided by 4 positive divisors. The sum of these divisors (counting 81402021) is 1, the average is 0.25.

Base conversion 81402021

Base	System	Value
2	Binary	100110110100001100010100101
3	Ternary	12200011122120200
4	Quaternary	10312201202211
5	Quinary	131314331041
6	Senary	12024421113
8	Octal	466414245
10	Decimal	81402021
12	Duodecimal	23317799
16	Hexadecimal	4da18a5
20	Vigesimal	158f511
36	Base36	1cgq79

Cryptographic Hash Functions

md5	8564a093d44bdd33f5f7bacaeca75efd
sha1	31740cb36f9dc65ea5363a0b024397bf39b0a107
sha256	1a7bc666f663d87a6907f76655617c7487db47937b1baa424f026e21d571aff1
sha512	8c5de0cdc0a2e3d24e75ab88aef05d712700dd2976979b2cd391567aea17f7492dfbee3732229881f468027d1f515708390850877415f2b67c92e6ca1150aa89
ripemd-160	a0844f4233a94344652c13f32fecb9f395c930e7

81402021 as geometric shapes

Circle

Radius = n

Diameter	162804042
Circumference	511463982.32192
Area	2.0817100914856E+16

Sphere

Radius = n

Volume	2.2594054477737E+24
Surface area	8.3268403659426E+16
Circumference	511463982.32192

Square

Length = n

Perimeter	325608084
Area	6626289022884441
Diagonal	115119842.10278

Cube

Length = n

Surface area	39757734137306646
Volume	5.3939331819291E+23
Space diagonal	140992436.21079

Equilateral Triangle

Length = n

Perimeter	244206063
Area	2.8692673133179E+15
Altitude	70496218.105394

Triangular Pyramid

Length = n

Surface area	2.8692673133179E+15
Volume	6.3568112170153E+22
Height	38373280.700927