18887985 (number)

18887985 is an odd 8-digits composite number following 18887984 and preceding 18887986. In scientific notation, it is written as 1.8887985 × 10^7. The sum of its digits is 54. It has a total of 4 prime factors and 16 positive divisors. There are 9974016 positive integers (up to 18887985) that are relatively prime to 18887985.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.8887985 × 10^7
Engineering notation 1.8887985 × 10^6

Prime Factorization of 18887985

Prime Factorization 81 × 5 × 313 × 149

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 18887985
Product of the distinct prime numbers

The prime factorization of 18887985 is 81 × 5 × 313 × 149. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 3, 81, 14, 258, 145, 7598, 1387, 94552, 71830, 192873, 336860, 4474613, 4015624, 24309373, 46612207, 687175600, 466598814, 1711571063, 3527801938

Basic calculations (n = 18887985)

Multiplication

n×y
n×2 37775970
n×3 56663955
n×4 75551940
n×5 94439925

Division

n÷y
n÷2 9443992.5
n÷3 6295995
n÷3 4721996.25
n÷5 3777597

Exponentiation

ny
n2 356755977360225
n3 6.7384015490403E+21
n4 1.2727482738225E+29
n5 2.4039650304735E+36

Nth Root

y√n
2√n 4346.030947888
3√n 266.3147432317
4√n 65.924433618257
5√n 28.525753554031

Divisors of 18887985

1, 5, 81, 149, 313, 405, 745, 1565, 12069, 25353, 46637, 60345, 126765, 233185, 3777597, 18887985

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 -18887984
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 18887985 can be divided by 16 positive divisors. The sum of these divisors (counting 18887985) is 1, the average is 0.0625.

Base conversion 18887985

Base System Value
2 Binary 1001000000011010100110001
3 Ternary 1022112121110000
4 Quaternary 1020003110301
5 Quinary 14313403420
6 Senary 1512500213
8 Octal 110032461
10 Decimal 18887985
12 Duodecimal 63aa669
16 Hexadecimal 1203531
20 Vigesimal 5i0jj5
36 Base36 b8u29

Cryptographic Hash Functions

md5 7a044f56bfb975beed8ebfa1476b644e
sha1 1c853d8a9886b6c4353933484ea888089493dc92
sha256 fe206c0b81886b43d5995f06d62d63c87ef31df75ad4fceb0e86e8643e46125b
sha512 29e127337d16a2ac47d3a1a4c3b6a905939e5482f1eb968726f2ad5651c56abfe6f2cade602fd1d70cb381a3b0428905c2f1d06b0af17bac19217002c21eb404
ripemd-160 1491d688b3df6e9f823678f7f3a92b186da9c4ab

18887985 as geometric shapes

Circle

Radius = n
Diameter 37775970
Circumference 118676709.83423
Area 1.1207819575991E+15

Sphere

Radius = n
Volume 2.8225750404537E+22
Surface area 4.4831278303965E+15
Circumference 118676709.83423

Square

Length = n
Perimeter 75551940
Area 356755977360225
Diagonal 26711644.5529

Cube

Length = n
Surface area 2140535864161350
Volume 6.7384015490403E+21
Space diagonal 32714949.672599

Equilateral Triangle

Length = n
Perimeter 56663955
Area 1.5447986967295E+14
Altitude 16357474.836299

Triangular Pyramid

Length = n
Surface area 1.5447986967295E+14
Volume 7.9412823828072E+20
Height 8903881.5176332