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

81072538 (number)

81072538 is an even 8-digits composite number following 81072537 and preceding 81072539. In scientific notation, it is written as 8.1072538 × 10^7. The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors. There are 39871680 positive integers (up to 81072538) that are relatively prime to 81072538.

Interesting facts

81072538 has 8 divisors, whose sum is 123602580
The reverse of 81072538 is 83527018
Previous prime number is 61

Basic properties

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

Name

Name	eighty-one million seventy-two thousand five hundred thirty-eight

Notation

Scientific notation	8.1072538 × 10^7
Engineering notation	8.1072538 × 10^6

Prime Factorization of 81072538

Prime Factorization 2 × 61 × 664529

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81072538	Product of the distinct prime numbers

The prime factorization of 81072538 is 2 × 61 × 664529. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 6, 20, 1, 198, 672, 7511, 2684, 17793, 64099, 838272, 320978, 9977507, 9445003, 15614673, 10503380, 106814750, 488421938, 189106916, 8538956002

Basic calculations (n = 81072538)

Multiplication

n×y

n×2	162145076
n×3	243217614
n×4	324290152
n×5	405362690

Division

n÷y

n÷2	40536269
n÷3	27024179.333333
n÷3	20268134.5
n÷5	16214507.6

Exponentiation

n^y

n²	6572756417761444
n³	5.3287004444371E+23
n⁴	4.3201126927224E+31
n⁵	3.5024250044502E+39

Nth Root

^y√n

²√n	9004.0289870702
³√n	432.80399045684
⁴√n	94.889562055424
⁵√n	38.174622735357

Divisors of 81072538

1, 2, 61, 122, 664529, 1329058, 40536269, 81072538

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	-81072537	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 81072538 can be divided by 8 positive divisors. The sum of these divisors (counting 81072538) is 1, the average is 0.125.

Base conversion 81072538

Base	System	Value
2	Binary	100110101010001000110011010
3	Ternary	12122112220121121
4	Quaternary	10311101012122
5	Quinary	131223310123
6	Senary	12013355454
8	Octal	465210632
10	Decimal	81072538
12	Duodecimal	23198b8a
16	Hexadecimal	4d5119a
20	Vigesimal	156e16i
36	Base36	1c9nyy

Cryptographic Hash Functions

md5	2e4b609b24a8048431ecb30b5c081521
sha1	b8c31b977bc507e1351f1dbf9c4159a5eff3ae0b
sha256	7bd4f4c69a11ccf6c306399e7dd6560f459549d76bd6d80bcc3e01a2130e3ed8
sha512	909cbfda793868650aab333fef3eaec34a4bee146e667a19a0e874054ae409232cd308d3079dd2c32fbcb66415429b2809a41b461f9ad2918bb1db895ca21b1d
ripemd-160	8636c5b9ddf7d3693c58173ecab3d205ff81389b

81072538 as geometric shapes

Circle

Radius = n

Diameter	162145076
Circumference	509393779.57736
Area	2.0648923275875E+16

Sphere

Radius = n

Volume	2.2320808225899E+24
Surface area	8.2595693103498E+16
Circumference	509393779.57736

Square

Length = n

Perimeter	324290152
Area	6572756417761444
Diagonal	114653882.77561

Cube

Length = n

Surface area	39436538506568664
Volume	5.3287004444371E+23
Space diagonal	140421754.91456

Equilateral Triangle

Length = n

Perimeter	243217614
Area	2.8460870153343E+15
Altitude	70210877.457279

Triangular Pyramid

Length = n

Surface area	2.8460870153343E+15
Volume	6.2799336986221E+22
Height	38217960.925203