18381978 (number)

18381978 is an even 8-digits composite number following 18381977 and preceding 18381979. In scientific notation, it is written as 1.8381978 × 10^7. The sum of its digits is 45. It has a total of 6 prime factors and 48 positive divisors. There are 6053616 positive integers (up to 18381978) that are relatively prime to 18381978.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.8381978 × 10^7
Engineering notation 1.8381978 × 10^6

Prime Factorization of 18381978

Prime Factorization 2 × 9 × 3 × 9 × 109 × 347

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2042442
Product of the distinct prime numbers

The prime factorization of 18381978 is 2 × 9 × 3 × 9 × 109 × 347. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 18381978)

Multiplication

n×y
n×2 36763956
n×3 55145934
n×4 73527912
n×5 91909890

Division

n÷y
n÷2 9190989
n÷3 6127326
n÷3 4595494.5
n÷5 3676395.6

Exponentiation

ny
n2 337897115192484
n3 6.2112173377317E+21
n4 1.141744604554E+29
n5 2.0987524202531E+36

Nth Root

y√n
2√n 4287.4209030605
3√n 263.91500362959
4√n 65.478400278722
5√n 28.371248545626

Divisors of 18381978

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 -18381977
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 18381978 can be divided by 48 positive divisors. The sum of these divisors (counting 18381978) is 1, the average is 0.020833333333333.

Base conversion 18381978

Base System Value
2 Binary 1000110000111110010011010
3 Ternary 1021120220100000
4 Quaternary 1012013302122
5 Quinary 14201210403
6 Senary 1453553430
8 Octal 106076232
10 Decimal 18381978
12 Duodecimal 61a5876
16 Hexadecimal 1187c9a
20 Vigesimal 5eheii
36 Base36 axzmi

Cryptographic Hash Functions

md5 045290cfb4a64a1d8853ebca00e4467d
sha1 f3742f895cff6d8b83be78c768d359762d69d5eb
sha256 bc4dc3754a39cd56bbe415ad1ae12ebe99bbb4630c08eee1e8fc137957e0ccd9
sha512 5f3e3fcfb6c2005258f7320c7d9942f054365d4277b2096f88d0421133183f8cc253c72ae9802f8c878bfaa7aba0d3c51fa6183cc42635be286ff47f53048d5a
ripemd-160 fbf004834601dd1af1651d71aa9b4316864a7b59

18381978 as geometric shapes

Circle

Radius = n
Diameter 36763956
Circumference 115497374.0865
Area 1.0615350947579E+15

Sphere

Radius = n
Volume 2.601748634409E+22
Surface area 4.2461403790316E+15
Circumference 115497374.0865

Square

Length = n
Perimeter 73527912
Area 337897115192484
Diagonal 25996042.590844

Cube

Length = n
Surface area 2027382691154904
Volume 6.2112173377317E+21
Space diagonal 31838519.839613

Equilateral Triangle

Length = n
Perimeter 55145934
Area 1.4631374281108E+14
Altitude 15919259.919807

Triangular Pyramid

Length = n
Surface area 1.4631374281108E+14
Volume 7.3199898315559E+20
Height 8665347.5302813