81012261 (number)

81012261 is an odd 8-digits composite number following 81012260 and preceding 81012262. In scientific notation, it is written as 8.1012261 × 10^7. The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors. There are 48424320 positive integers (up to 81012261) that are relatively prime to 81012261.

Interesting facts

Basic properties

Name

Name eighty-one million twelve thousand two hundred sixty-one

Notation

Scientific notation 8.1012261 × 10^7
Engineering notation 8.1012261 × 10^6

Prime Factorization of 81012261

Prime Factorization 3 × 11 × 73 × 33629

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81012261
Product of the distinct prime numbers

The prime factorization of 81012261 is 3 × 11 × 73 × 33629. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 7, 15, 28, 118, 812, 7562, 7441, 17262, 78730, 711206, 270635, 314031, 5194080, 37935952, 27330805, 453338328, 674997406, 9203242571, 9326706177

Basic calculations (n = 81012261)

Multiplication

n×y
n×2 162024522
n×3 243036783
n×4 324049044
n×5 405061305

Division

n÷y
n÷2 40506130.5
n÷3 27004087
n÷3 20253065.25
n÷5 16202452.2

Exponentiation

ny
n2 6562986432332121
n3 5.3168236979555E+23
n4 4.3072790910975E+31
n5 3.4894241792784E+39

Nth Root

y√n
2√n 9000.6811408915
3√n 432.69670137594
4√n 94.871919664838
5√n 38.168944520699

Divisors of 81012261

1, 3, 11, 33, 73, 219, 803, 2409, 33629, 100887, 369919, 1109757, 2454917, 7364751, 27004087, 81012261

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81012260
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81012261 can be divided by 16 positive divisors. The sum of these divisors (counting 81012261) is 1, the average is 0.0625.

Base conversion 81012261

Base System Value
2 Binary 100110101000010011000100101
3 Ternary 12122102211221010
4 Quaternary 10311002120211
5 Quinary 131214343021
6 Senary 12012212433
8 Octal 465023045
10 Decimal 81012261
12 Duodecimal 2316a119
16 Hexadecimal 4d42625
20 Vigesimal 1566ad1
36 Base36 1c8dgl

Cryptographic Hash Functions

md5 7b7099db123a4455fddabaac5d6b5b74
sha1 8c588ecf00517336e039cf1ebc51c4d3674da25f
sha256 4f32ceb61f01f2631bb085bea4a0ba15865b02f89908abffbcab69d19c4aad63
sha512 27587983bbad0911a8b50dfd3021ce578c428b9f2928ce8ffef4389a86a933ceb49697f2bd61569aebdffe412b5c7088073aa3eec6caa44cb56ac97029d64964
ripemd-160 3bddb0a0df0ef91803b66bbcba27f09edc568e91

81012261 as geometric shapes

Circle

Radius = n
Diameter 162024522
Circumference 509015048.0166
Area 2.0618229961424E+16

Sphere

Radius = n
Volume 2.2271059026572E+24
Surface area 8.2472919845696E+16
Circumference 509015048.0166

Square

Length = n
Perimeter 324049044
Area 6562986432332121
Diagonal 114568638.22471

Cube

Length = n
Surface area 39377918593992726
Volume 5.3168236979555E+23
Space diagonal 140317352.08803

Equilateral Triangle

Length = n
Perimeter 243036783
Area 2.8418564875461E+15
Altitude 70158676.044015

Triangular Pyramid

Length = n
Surface area 2.8418564875461E+15
Volume 6.2659368186628E+22
Height 38189546.074903