81649863 (number)

81649863 is an odd 8-digits composite number following 81649862 and preceding 81649864. In scientific notation, it is written as 8.1649863 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors. There are 54295920 positive integers (up to 81649863) that are relatively prime to 81649863.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred forty-nine thousand eight hundred sixty-three

Notation

Scientific notation 8.1649863 × 10^7
Engineering notation 8.1649863 × 10^6

Prime Factorization of 81649863

Prime Factorization 27 × 3 × 491 × 2053

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81649863
Product of the distinct prime numbers

The prime factorization of 81649863 is 27 × 3 × 491 × 2053. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 1, 12, 26, 727, 820, 2932, 9326, 5962, 30740, 521207, 829324, 3710855, 610707, 18671466, 11004941, 209106402, 385641761, 9997742554, 3947485502

Basic calculations (n = 81649863)

Multiplication

n×y
n×2 163299726
n×3 244949589
n×4 326599452
n×5 408249315

Division

n÷y
n÷2 40824931.5
n÷3 27216621
n÷3 20412465.75
n÷5 16329972.6

Exponentiation

ny
n2 6666700127918769
n3 5.4433515210665E+23
n4 4.4444890595592E+31
n5 3.6289192281801E+39

Nth Root

y√n
2√n 9036.0313744475
3√n 433.82890712597
4√n 95.058042134517
5√n 38.228837527054

Divisors of 81649863

1, 3, 27, 81, 491, 1473, 2053, 6159, 13257, 39771, 55431, 166293, 1008023, 3024069, 27216621, 81649863

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 -81649862
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 81649863 can be divided by 16 positive divisors. The sum of these divisors (counting 81649863) is 1, the average is 0.0625.

Base conversion 81649863

Base System Value
2 Binary 100110111011110000011000111
3 Ternary 12200122020120000
4 Quaternary 10313132003013
5 Quinary 131400243423
6 Senary 12034012343
8 Octal 467360307
10 Decimal 81649863
12 Duodecimal 234170b3
16 Hexadecimal 4dde0c7
20 Vigesimal 15a64d3
36 Base36 1cm1fr

Cryptographic Hash Functions

md5 4df3e61189ae97a2acd77ba824ca22bb
sha1 84f0ea9c38eb608b8610e47b323ce86723d930cf
sha256 51bc0ac337b45a7013032e36c19239e8066c17eefeee0a73009847722076de59
sha512 a9d48a9e2761c8df5d49d92429df07a164f08ef98104053e953e1da12616f10467627ea7ebf7c44cba0b873074f4ecc4e849839a58d271d3b24361c32244fc9c
ripemd-160 97e1f0696ce43e44ac6a52e01913c23c80224559

81649863 as geometric shapes

Circle

Radius = n
Diameter 163299726
Circumference 513021219.53483
Area 2.0944056145556E+16

Sphere

Radius = n
Volume 2.2801057532652E+24
Surface area 8.3776224582223E+16
Circumference 513021219.53483

Square

Length = n
Perimeter 326599452
Area 6666700127918769
Diagonal 115470343.62051

Cube

Length = n
Surface area 40000200767512614
Volume 5.4433515210665E+23
Space diagonal 141421711.14704

Equilateral Triangle

Length = n
Perimeter 244949589
Area 2.8867658350953E+15
Altitude 70710855.573519

Triangular Pyramid

Length = n
Surface area 2.8867658350953E+15
Volume 6.4150512882137E+22
Height 38490114.540168