18390987 (number)

18390987 is an odd 8-digits composite number following 18390986 and preceding 18390988. In scientific notation, it is written as 1.8390987 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 12 positive divisors. There are 12242880 positive integers (up to 18390987) that are relatively prime to 18390987.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.8390987 × 10^7
Engineering notation 1.8390987 × 10^6

Prime Factorization of 18390987

Prime Factorization 3 × 3 × 1091 × 1873

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 6130329
Product of the distinct prime numbers

The prime factorization of 18390987 is 3 × 3 × 1091 × 1873. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 10, 7, 68, 649, 488, 3874, 2500, 70712, 24500, 708741, 327528, 8914950, 6468394, 71422244, 24978391, 350466233, 541212517, 7790141952, 2176381729

Basic calculations (n = 18390987)

Multiplication

n×y
n×2 36781974
n×3 55172961
n×4 73563948
n×5 91954935

Division

n÷y
n÷2 9195493.5
n÷3 6130329
n÷3 4597746.75
n÷5 3678197.4

Exponentiation

ny
n2 338228402834169
n3 6.220354159554E+21
n4 1.1439845248375E+29
n5 2.1039004524488E+36

Nth Root

y√n
2√n 4288.4714059907
3√n 263.9581114669
4√n 65.486421539054
5√n 28.374028948103

Divisors of 18390987

1, 3, 9, 1091, 1873, 3273, 5619, 9819, 16857, 2043443, 6130329, 18390987

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18390986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18390987 can be divided by 12 positive divisors. The sum of these divisors (counting 18390987) is 1, the average is 0.083333333333333.

Base conversion 18390987

Base System Value
2 Binary 1000110001001111111001011
3 Ternary 1021121100200200
4 Quaternary 1012021333023
5 Quinary 14202002422
6 Senary 1454103243
8 Octal 106117713
10 Decimal 18390987
12 Duodecimal 61aab23
16 Hexadecimal 1189fcb
20 Vigesimal 5eih97
36 Base36 ay6kr

Cryptographic Hash Functions

md5 8ad7471baca3d7662768038da8ce9454
sha1 a52d69bce3658284bad1fb6a2e2455cf993cad0e
sha256 442aff86d79170d9906494e7f12d6d3dd891668a0fa084ac1032cefe19df10c6
sha512 cf2fd50d8781785fa7e55630f7dd7f32ab018bfd7e2f0f7401dfac65ebbb63f05d0fca94c8476e4b6bdfbc07f331251085e8e73f19885d42ef5d2781d40dec91
ripemd-160 db8b288539c1b6810ddaba864c4c0ff510aabdae

18390987 as geometric shapes

Circle

Radius = n
Diameter 36781974
Circumference 115553979.30293
Area 1.0625758655792E+15

Sphere

Radius = n
Volume 2.6055758573842E+22
Surface area 4.2503034623169E+15
Circumference 115553979.30293

Square

Length = n
Perimeter 73563948
Area 338228402834169
Diagonal 26008783.240827

Cube

Length = n
Surface area 2029370417005014
Volume 6.220354159554E+21
Space diagonal 31854123.885339

Equilateral Triangle

Length = n
Perimeter 55172961
Area 1.4645719456791E+14
Altitude 15927061.942669

Triangular Pyramid

Length = n
Surface area 1.4645719456791E+14
Volume 7.3307576793376E+20
Height 8669594.4136091