81572394 (number)

81572394 is an even 8-digits composite number following 81572393 and preceding 81572395. In scientific notation, it is written as 8.1572394 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 27173520 positive integers (up to 81572394) that are relatively prime to 81572394.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred seventy-two thousand three hundred ninety-four

Notation

Scientific notation 8.1572394 × 10^7
Engineering notation 8.1572394 × 10^6

Prime Factorization of 81572394

Prime Factorization 2 × 3 × 6571 × 2069

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81572394
Product of the distinct prime numbers

The prime factorization of 81572394 is 2 × 3 × 6571 × 2069. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81572394)

Multiplication

n×y
n×2 163144788
n×3 244717182
n×4 326289576
n×5 407861970

Division

n÷y
n÷2 40786197
n÷3 27190798
n÷3 20393098.5
n÷5 16314478.8

Exponentiation

ny
n2 6654055462891236
n3 5.4278723391682E+23
n4 4.4276454103233E+31
n5 3.6117363590318E+39

Nth Root

y√n
2√n 9031.7436854685
3√n 433.69165877835
4√n 95.03548645358
5√n 38.221580504672

Divisors of 81572394

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 -81572393
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 81572394 can be divided by 16 positive divisors. The sum of these divisors (counting 81572394) is 1, the average is 0.0625.

Base conversion 81572394

Base System Value
2 Binary 100110111001011001000101010
3 Ternary 12200111022021210
4 Quaternary 10313023020222
5 Quinary 131340304034
6 Senary 12032213550
8 Octal 467131052
10 Decimal 81572394
12 Duodecimal 2339a2b6
16 Hexadecimal 4dcb22a
20 Vigesimal 159gaje
36 Base36 1ckdnu

Cryptographic Hash Functions

md5 d6b97b43b471442f0f6e33b0fdeb968d
sha1 774b8503b896b21b40e7c639541fbb354ad523de
sha256 4c529f0c029ecf9d818d5f1fe3e2169a5c88effa3a056ca241501a65ed72c4d7
sha512 1f2a801bf65d27a37296c3209080d293d5c5eac739bdbd2f9c4c93308e5c378ff5eb83a2d048f0897988d3892756da35bf95df63a421a9f422d0beaf7238704c
ripemd-160 4a2b727b84e8566faaca5dbd56921fecbb17af44

81572394 as geometric shapes

Circle

Radius = n
Diameter 163144788
Circumference 512534467.45226
Area 2.0904331758798E+16

Sphere

Radius = n
Volume 2.2736218487139E+24
Surface area 8.3617327035193E+16
Circumference 512534467.45226

Square

Length = n
Perimeter 326289576
Area 6654055462891236
Diagonal 115360785.91004

Cube

Length = n
Surface area 39924332777347416
Volume 5.4278723391682E+23
Space diagonal 141287530.90303

Equilateral Triangle

Length = n
Perimeter 244717182
Area 2.8812905345272E+15
Altitude 70643765.451513

Triangular Pyramid

Length = n
Surface area 2.8812905345272E+15
Volume 6.3968088974012E+22
Height 38453595.303347