18881388 (number)

18881388 is an even 8-digits composite number following 18881387 and preceding 18881389. In scientific notation, it is written as 1.8881388 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 24 positive divisors. There are 6264000 positive integers (up to 18881388) that are relatively prime to 18881388.

Interesting facts

Basic properties

Name

Name eighteen million eight hundred eighty-one thousand three hundred eighty-eight

Notation

Scientific notation 1.8881388 × 10^7
Engineering notation 1.8881388 × 10^6

Prime Factorization of 18881388

Prime Factorization 2 × 2 × 9 × 233 × 2251

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 9440694
Product of the distinct prime numbers

The prime factorization of 18881388 is 2 × 2 × 9 × 233 × 2251. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 3, 48, 94, 166, 179, 4551, 2007, 26339, 88243, 739075, 917414, 5838847, 5189650, 94956995, 61592463, 400290733, 217332055, 3037209485, 1666334146

Basic calculations (n = 18881388)

Multiplication

n×y
n×2 37762776
n×3 56644164
n×4 75525552
n×5 94406940

Division

n÷y
n÷2 9440694
n÷3 6293796
n÷3 4720347
n÷5 3776277.6

Exponentiation

ny
n2 356506812806544
n3 6.7313434572437E+21
n4 1.2709710757748E+29
n5 2.3997698018481E+36

Nth Root

y√n
2√n 4345.2719132409
3√n 266.28373440179
4√n 65.918676513116
5√n 28.523760639566

Divisors of 18881388

1, 2, 4, 9, 18, 36, 233, 466, 932, 2097, 2251, 4194, 4502, 8388, 9004, 20259, 40518, 81036, 524483, 1048966, 2097932, 4720347, 9440694, 18881388

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18881387
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18881388 can be divided by 24 positive divisors. The sum of these divisors (counting 18881388) is 1, the average is 0.041666666666667.

Base conversion 18881388

Base System Value
2 Binary 1001000000001101101101100
3 Ternary 1022112021101200
4 Quaternary 1020001231230
5 Quinary 14313201023
6 Senary 1512405500
8 Octal 110015554
10 Decimal 18881388
12 Duodecimal 63a6890
16 Hexadecimal 1201b6c
20 Vigesimal 5i0398
36 Base36 b8oz0

Cryptographic Hash Functions

md5 685bb17a2d8be1951a4179456c70967b
sha1 af3e8623458d13bc98057386e04c79f857e428dd
sha256 d1ee311ac77cc97ee414841198629bf31b70cead46612bb6601aaac05fbf818c
sha512 697418d6643ab2c34488ee37fb3625a2490d53877bbf1c3183f996eb9e07104eb7f807c0307b26ae672468846f8163ce6479bd11b1d075c4034894036e721b0f
ripemd-160 7acb90214c986ec980e140f81b4d7196ae1151e0

18881388 as geometric shapes

Circle

Radius = n
Diameter 37762776
Circumference 118635259.66076
Area 1.1199991840678E+15

Sphere

Radius = n
Volume 2.8196185538755E+22
Surface area 4.479996736271E+15
Circumference 118635259.66076

Square

Length = n
Perimeter 75525552
Area 356506812806544
Diagonal 26702314.986029

Cube

Length = n
Surface area 2139040876839264
Volume 6.7313434572437E+21
Space diagonal 32703523.333421

Equilateral Triangle

Length = n
Perimeter 56644164
Area 1.5437197825635E+14
Altitude 16351761.666711

Triangular Pyramid

Length = n
Surface area 1.5437197825635E+14
Volume 7.9329643418546E+20
Height 8900771.6620095