81696989 (number)

81696989 is an odd 8-digits composite number following 81696988 and preceding 81696990. In scientific notation, it is written as 8.1696989 × 10^7. The sum of its digits is 56. It has a total of 4 prime factors and 16 positive divisors. There are 70287360 positive integers (up to 81696989) that are relatively prime to 81696989.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred ninety-six thousand nine hundred eighty-nine

Notation

Scientific notation 8.1696989 × 10^7
Engineering notation 8.1696989 × 10^6

Prime Factorization of 81696989

Prime Factorization 23 × 11 × 97 × 3329

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81696989
Product of the distinct prime numbers

The prime factorization of 81696989 is 23 × 11 × 97 × 3329. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 9, 51, 76, 613, 252, 4983, 2480, 82352, 11012, 193833, 566940, 3475729, 4035462, 86436664, 23510208, 650514255, 824904890, 5273003695, 2092838697

Basic calculations (n = 81696989)

Multiplication

n×y
n×2 163393978
n×3 245090967
n×4 326787956
n×5 408484945

Division

n÷y
n÷2 40848494.5
n÷3 27232329.666667
n÷3 20424247.25
n÷5 16339397.8

Exponentiation

ny
n2 6674398011666121
n3 5.4527822094071E+23
n4 4.4547588818133E+31
n5 3.6394038736515E+39

Nth Root

y√n
2√n 9038.6386696228
3√n 433.91235567989
4√n 95.071755372575
5√n 38.233249430145

Divisors of 81696989

1, 11, 23, 97, 253, 1067, 2231, 3329, 24541, 36619, 76567, 322913, 842237, 3552043, 7426999, 81696989

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 -81696988
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 81696989 can be divided by 16 positive divisors. The sum of these divisors (counting 81696989) is 1, the average is 0.0625.

Base conversion 81696989

Base System Value
2 Binary 100110111101001100011011101
3 Ternary 12200201122012102
4 Quaternary 10313221203131
5 Quinary 131403300424
6 Senary 12035014445
8 Octal 467514335
10 Decimal 81696989
12 Duodecimal 2343a425
16 Hexadecimal 4de98dd
20 Vigesimal 15ac299
36 Base36 1cn1st

Cryptographic Hash Functions

md5 66e4fcc06cb8e0aea02446e93dcb8ecd
sha1 18d071953be0c428273badb7eb64bb5b6972fc13
sha256 7d07b68c2a132138da38ff41160ded827d99c1ba03a0186397785f01723a1f6f
sha512 616cd98ad5d5a1c70f2489a1c5bf2be34d67147dde447cc41ce9a2a9be0d8cabbb9a420c6da11d72f598a17a2d1a460b6287f75db3077d88676767d138f7075e
ripemd-160 1d4bcfa11abbb52e4a4afdaec087e0fb24eef1f4

81696989 as geometric shapes

Circle

Radius = n
Diameter 163393978
Circumference 513317320.92561
Area 2.0968239760585E+16

Sphere

Radius = n
Volume 2.2840560707598E+24
Surface area 8.3872959042338E+16
Circumference 513317320.92561

Square

Length = n
Perimeter 326787956
Area 6674398011666121
Diagonal 115536989.84885

Cube

Length = n
Surface area 40046388069996726
Volume 5.4527822094071E+23
Space diagonal 141503335.7734

Equilateral Triangle

Length = n
Perimeter 245090967
Area 2.8900991165356E+15
Altitude 70751667.886698

Triangular Pyramid

Length = n
Surface area 2.8900991165356E+15
Volume 6.4261654610085E+22
Height 38512329.949615