18887988 (number)

18887988 is an even 8-digits composite number following 18887987 and preceding 18887989. In scientific notation, it is written as 1.8887988 × 10^7. The sum of its digits is 57. It has a total of 6 prime factors and 48 positive divisors. There are 5318880 positive integers (up to 18887988) that are relatively prime to 18887988.

Interesting facts

Basic properties

Name

Name eighteen million eight hundred eighty-seven thousand nine hundred eighty-eight

Notation

Scientific notation 1.8887988 × 10^7
Engineering notation 1.8887988 × 10^6

Prime Factorization of 18887988

Prime Factorization 2 × 2 × 3 × 7 × 71 × 3167

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 9443994
Product of the distinct prime numbers

The prime factorization of 18887988 is 2 × 2 × 3 × 7 × 71 × 3167. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 18887988)

Multiplication

n×y
n×2 37775976
n×3 56663964
n×4 75551952
n×5 94439940

Division

n÷y
n÷2 9443994
n÷3 6295996
n÷3 4721997
n÷5 3777597.6

Exponentiation

ny
n2 356756090688144
n3 6.7384047598446E+21
n4 1.2727490824309E+29
n5 2.4039669395965E+36

Nth Root

y√n
2√n 4346.0312930305
3√n 266.31475733139
4√n 65.92443623597
5√n 28.525754460186

Divisors of 18887988

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18887987
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18887988 can be divided by 48 positive divisors. The sum of these divisors (counting 18887988) is 1, the average is 0.020833333333333.

Base conversion 18887988

Base System Value
2 Binary 1001000000011010100110100
3 Ternary 1022112121110010
4 Quaternary 1020003110310
5 Quinary 14313403423
6 Senary 1512500220
8 Octal 110032464
10 Decimal 18887988
12 Duodecimal 63aa670
16 Hexadecimal 1203534
20 Vigesimal 5i0jj8
36 Base36 b8u2c

Cryptographic Hash Functions

md5 86a0a40032548b6476c7a8b7dad42279
sha1 c0cd9dab38ae31904c919fb6bfdc258964f2b2c1
sha256 193fd6d5b824a7a68b4d9a9dff17d61d32a7b2e94d73217e0791d692f4977372
sha512 4e541718b5e5eba3dc80023ec2d7d96f3bd08390084005bfea4b7b2da97d23153d48d843b7449b7c996e61bb01f057b6b8af806c2e70fbeb66d8a54a9b2dc80a
ripemd-160 33c53a751e9414e1d9cfc7ce7dce86e61d1bf6fa

18887988 as geometric shapes

Circle

Radius = n
Diameter 37775976
Circumference 118676728.68378
Area 1.1207823136293E+15

Sphere

Radius = n
Volume 2.8225763853923E+22
Surface area 4.4831292545171E+15
Circumference 118676728.68378

Square

Length = n
Perimeter 75551952
Area 356756090688144
Diagonal 26711648.79554

Cube

Length = n
Surface area 2140536544128864
Volume 6.7384047598446E+21
Space diagonal 32714954.868751

Equilateral Triangle

Length = n
Perimeter 56663964
Area 1.5447991874538E+14
Altitude 16357477.434376

Triangular Pyramid

Length = n
Surface area 1.5447991874538E+14
Volume 7.9412861667763E+20
Height 8903882.9318468