81357072 (number)

81357072 is an even 8-digits composite number following 81357071 and preceding 81357073. In scientific notation, it is written as 8.1357072 × 10^7. The sum of its digits is 33. It has a total of 7 prime factors and 40 positive divisors. There are 25939584 positive integers (up to 81357072) that are relatively prime to 81357072.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred fifty-seven thousand seventy-two

Notation

Scientific notation 8.1357072 × 10^7
Engineering notation 8.1357072 × 10^6

Prime Factorization of 81357072

Prime Factorization 2 × 2 × 2 × 2 × 3 × 23 × 73693

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10169634
Product of the distinct prime numbers

The prime factorization of 81357072 is 2 × 2 × 2 × 2 × 3 × 23 × 73693. Since it has a total of 7 prime factors.

Most popular turbo-numbers

8, 7, 29, 79, 390, 406, 789, 6999, 84212, 18090, 268636, 520015, 3149053, 2419477, 69158258, 50347691, 309102816, 660864904, 414553875, 8465038337

Basic calculations (n = 81357072)

Multiplication

n×y
n×2 162714144
n×3 244071216
n×4 325428288
n×5 406785360

Division

n÷y
n÷2 40678536
n÷3 27119024
n÷3 20339268
n÷5 16271414.4

Exponentiation

ny
n2 6618973164413184
n3 5.3850027630323E+23
n4 4.3810805751222E+31
n5 3.5643188778802E+39

Nth Root

y√n
2√n 9019.8155191778
3√n 433.30972547259
4√n 94.972709338935
5√n 38.201380899903

Divisors of 81357072

1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 46, 48, 69, 92, 138, 184, 276, 368, 552, 1104, 73693, 147386, 221079, 294772, 442158, 589544, 884316, 1179088, 1694939, 1768632, 3389878, 3537264, 5084817, 6779756, 10169634, 13559512, 20339268, 27119024, 40678536, 81357072

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81357071
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81357072 can be divided by 40 positive divisors. The sum of these divisors (counting 81357072) is 1, the average is 0.025.

Base conversion 81357072

Base System Value
2 Binary 100110110010110100100010000
3 Ternary 12200002100220220
4 Quaternary 10312112210100
5 Quinary 131311411242
6 Senary 12023433040
8 Octal 466264420
10 Decimal 81357072
12 Duodecimal 232b5780
16 Hexadecimal 4d96910
20 Vigesimal 1589cdc
36 Base36 1cfrio

Cryptographic Hash Functions

md5 0c1c820537f30f261fd5d1f6ed7a53b8
sha1 cbbf32b5cbc6cd819418a5f5ce59e97ba283ef0a
sha256 14e92e74bd7dbf81df77a8937ccbaf1efeaa5ae28e55c05fb55abb3868c9fb31
sha512 c601c2e2424d9b2427b892f8491606b226bf805371861c7ea52ca6439f9d079787f3712cd544769151541869f257efc35e3d8ee1ce318b0d289df01e4e83b3c6
ripemd-160 757cea5c06ee1e01737cf3016ab7fe9bd4b4ba58

81357072 as geometric shapes

Circle

Radius = n
Diameter 162714144
Circumference 511181559.42555
Area 2.0794117467628E+16

Sphere

Radius = n
Volume 2.2556646826537E+24
Surface area 8.3176469870514E+16
Circumference 511181559.42555

Square

Length = n
Perimeter 325428288
Area 6618973164413184
Diagonal 115056274.61736

Cube

Length = n
Surface area 39713838986479104
Volume 5.3850027630323E+23
Space diagonal 140914582.25904

Equilateral Triangle

Length = n
Perimeter 244071216
Area 2.8660994536746E+15
Altitude 70457291.12952

Triangular Pyramid

Length = n
Surface area 2.8660994536746E+15
Volume 6.3462866174141E+22
Height 38352091.539121