18996987 (number)

18996987 is an odd 8-digits composite number following 18996986 and preceding 18996988. In scientific notation, it is written as 1.8996987 × 10^7. The sum of its digits is 57. It has a total of 3 prime factors and 8 positive divisors. There are 12652200 positive integers (up to 18996987) that are relatively prime to 18996987.

Interesting facts

Basic properties

Name

Name eighteen million nine hundred ninety-six thousand nine hundred eighty-seven

Notation

Scientific notation 1.8996987 × 10^7
Engineering notation 1.8996987 × 10^6

Prime Factorization of 18996987

Prime Factorization 3 × 1279 × 4951

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 18996987
Product of the distinct prime numbers

The prime factorization of 18996987 is 3 × 1279 × 4951. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 7, 64, 41, 389, 868, 528, 8244, 48227, 29011, 55222, 701302, 98088, 4825538, 81251958, 20754825, 352828401, 869204482, 581328565, 4606963746

Basic calculations (n = 18996987)

Multiplication

n×y
n×2 37993974
n×3 56990961
n×4 75987948
n×5 94984935

Division

n÷y
n÷2 9498493.5
n÷3 6332329
n÷3 4749246.75
n÷5 3799397.4

Exponentiation

ny
n2 360885515078169
n3 6.8557374384283E+21
n4 1.3023835499324E+29
n5 2.4741363367079E+36

Nth Root

y√n
2√n 4358.5533150347
3√n 266.82605904905
4√n 66.019340461979
5√n 28.558602069346

Divisors of 18996987

1, 3, 1279, 3837, 4951, 14853, 6332329, 18996987

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18996986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18996987 can be divided by 8 positive divisors. The sum of these divisors (counting 18996987) is 1, the average is 0.125.

Base conversion 18996987

Base System Value
2 Binary 1001000011101111011111011
3 Ternary 1022202010222010
4 Quaternary 1020131323323
5 Quinary 14330400422
6 Senary 1515101003
8 Octal 110357373
10 Decimal 18996987
12 Duodecimal 6441763
16 Hexadecimal 121defb
20 Vigesimal 5iec97
36 Base36 bb663

Cryptographic Hash Functions

md5 fe1a921998ce04d1ceb2196a555da4b7
sha1 f4e0b24e8d72bdd8f4d74e92839a7042c0fbdf3e
sha256 4e5870e3305ec0e7b191e8ada3ff3dc0ee9ced6233a95fc991c8bc4c67767111
sha512 91f465a0abf8c3cb332cdf6a9f2599f86d95f9fee7ba8574c27936dc52aca1de43fa94c99dcfa531d8106f2374eedacb700b347f769ff99d5c4e9520b43c09e6
ripemd-160 74850a8f45b3e96fbe9f1c1dc51f09ce8b40722d

18996987 as geometric shapes

Circle

Radius = n
Diameter 37993974
Circumference 119361589.59908
Area 1.1337552829565E+15

Sphere

Radius = n
Volume 2.8717245828676E+22
Surface area 4.5350211318262E+15
Circumference 119361589.59908

Square

Length = n
Perimeter 75987948
Area 360885515078169
Diagonal 26865796.659625

Cube

Length = n
Surface area 2165313090469014
Volume 6.8557374384283E+21
Space diagonal 32903746.674725

Equilateral Triangle

Length = n
Perimeter 56990961
Area 1.5626801195776E+14
Altitude 16451873.337363

Triangular Pyramid

Length = n
Surface area 1.5626801195776E+14
Volume 8.0795640545785E+20
Height 8955265.5532085