81749888 (number)

81749888 is an even 8-digits composite number following 81749887 and preceding 81749889. In scientific notation, it is written as 8.1749888 × 10^7. The sum of its digits is 53. It has a total of 9 prime factors and 32 positive divisors. There are 37158400 positive integers (up to 81749888) that are relatively prime to 81749888.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred forty-nine thousand eight hundred eighty-eight

Notation

Scientific notation 8.1749888 × 10^7
Engineering notation 8.1749888 × 10^6

Prime Factorization of 81749888

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 11 × 58061

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 1277342
Product of the distinct prime numbers

The prime factorization of 81749888 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 11 × 58061. Since it has a total of 9 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81749888)

Multiplication

n×y
n×2 163499776
n×3 245249664
n×4 326999552
n×5 408749440

Division

n÷y
n÷2 40874944
n÷3 27249962.666667
n÷3 20437472
n÷5 16349977.6

Exponentiation

ny
n2 6683044188012544
n3 5.4633811386908E+23
n4 4.4663079618928E+31
n5 3.6512017565825E+39

Nth Root

y√n
2√n 9041.5644663963
3√n 434.00598857714
4√n 95.087141435613
5√n 38.238199372756

Divisors of 81749888

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81749887
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749888 can be divided by 32 positive divisors. The sum of these divisors (counting 81749888) is 1, the average is 0.03125.

Base conversion 81749888

Base System Value
2 Binary 100110111110110011110000000
3 Ternary 12200211022202122
4 Quaternary 10313312132000
5 Quinary 131411444023
6 Senary 12040103412
8 Octal 467663600
10 Decimal 81749888
12 Duodecimal 23464b68
16 Hexadecimal 4df6780
20 Vigesimal 15aiee8
36 Base36 1co6m8

Cryptographic Hash Functions

md5 a58356d37e337c0b141afe256a1687cc
sha1 720631282cce1228356db4c8b71663839f83afd1
sha256 bf9ce0f53452e905f8130b453d8a6aebf68e23d80f7a762ea3cf5fdfb506aef6
sha512 3b3673251335c1a36d2d3c2fd619d97f5aad906a79fc9348ce5ea54acd4945ea2ae51a758f9eaf4b440d22f66da78feb69495660df51bd8bdf7db47129f76ad9
ripemd-160 e82a7f9103cbbf3be8496f23e5ac3753aadffbc6

81749888 as geometric shapes

Circle

Radius = n
Diameter 163499776
Circumference 513649695.14518
Area 2.0995402524676E+16

Sphere

Radius = n
Volume 2.2884957398763E+24
Surface area 8.3981610098705E+16
Circumference 513649695.14518

Square

Length = n
Perimeter 326999552
Area 6683044188012544
Diagonal 115611800.33208

Cube

Length = n
Surface area 40098265128075264
Volume 5.4633811386908E+23
Space diagonal 141594959.52907

Equilateral Triangle

Length = n
Perimeter 245249664
Area 2.8938430207164E+15
Altitude 70797479.764533

Triangular Pyramid

Length = n
Surface area 2.8938430207164E+15
Volume 6.4386564189582E+22
Height 38537266.777361