16491981 (number)

16491981 is an odd 8-digits composite number following 16491980 and preceding 16491982. In scientific notation, it is written as 1.6491981 × 10^7. The sum of its digits is 39. It has a total of 5 prime factors and 32 positive divisors. There are 9132480 positive integers (up to 16491981) that are relatively prime to 16491981.

Interesting facts

Basic properties

Name

Name sixteen million four hundred ninety-one thousand nine hundred eighty-one

Notation

Scientific notation 1.6491981 × 10^7
Engineering notation 1.6491981 × 10^6

Prime Factorization of 16491981

Prime Factorization 3 × 19 × 11 × 29 × 907

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 16491981
Product of the distinct prime numbers

The prime factorization of 16491981 is 3 × 19 × 11 × 29 × 907. Since it has a total of 5 prime factors.

Most popular turbo-numbers

Basic calculations (n = 16491981)

Multiplication

n×y
n×2 32983962
n×3 49475943
n×4 65967924
n×5 82459905

Division

n÷y
n÷2 8245990.5
n÷3 5497327
n÷3 4122995.25
n÷5 3298396.2

Exponentiation

ny
n2 271985437304361
n3 4.4855786643002E+21
n4 7.3976078105644E+28
n5 1.2200120745728E+36

Nth Root

y√n
2√n 4061.0320116936
3√n 254.54091948862
4√n 63.726227031683
5√n 27.762243890074

Divisors of 16491981

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 -16491980
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 16491981 can be divided by 32 positive divisors. The sum of these divisors (counting 16491981) is 1, the average is 0.03125.

Base conversion 16491981

Base System Value
2 Binary 111110111010010111001101
3 Ternary 1011000212202010
4 Quaternary 332322113031
5 Quinary 13210220411
6 Senary 1345251433
8 Octal 76722715
10 Decimal 16491981
12 Duodecimal 5633b79
16 Hexadecimal fba5cd
20 Vigesimal 5319j1
36 Base36 9thal

Cryptographic Hash Functions

md5 b0c8b5cc061e5fbf0758547e6f035350
sha1 25db8466443dfc2b1dea842b10eb8c3caed6f343
sha256 f40e0adc796d77ed56390dc75a03793ac141fb700abf23595bbad84fdd550c8a
sha512 b91aaa476203bbf4db55d1624e5b18d9affb4d245c5c9ac60f9edf61e0c04b1611b887623e5f772b05510cb674093d12dfe92c2fe8c0a4dcd2ae41e2baf81432
ripemd-160 3c0f40b78986604854b349663f933c297e428e23

16491981 as geometric shapes

Circle

Radius = n
Diameter 32983962
Circumference 103622172.70548
Area 8.5446745171879E+14

Sphere

Radius = n
Volume 1.878914797182E+22
Surface area 3.4178698068752E+15
Circumference 103622172.70548

Square

Length = n
Perimeter 65967924
Area 271985437304361
Diagonal 23323183.200599

Cube

Length = n
Surface area 1631912623826166
Volume 4.4855786643002E+21
Space diagonal 28564949.009461

Equilateral Triangle

Length = n
Perimeter 49475943
Area 1.177731490825E+14
Altitude 14282474.50473

Triangular Pyramid

Length = n
Surface area 1.177731490825E+14
Volume 5.2863051517873E+20
Height 7774394.4001998