20787978 (number)

20787978 is an even 8-digits composite number following 20787977 and preceding 20787979. In scientific notation, it is written as 2.0787978 × 10^7. The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors. There are 6798480 positive integers (up to 20787978) that are relatively prime to 20787978.

Interesting facts

Basic properties

Name

Name twenty million seven hundred eighty-seven thousand nine hundred seventy-eight

Notation

Scientific notation 2.0787978 × 10^7
Engineering notation 2.0787978 × 10^6

Prime Factorization of 20787978

Prime Factorization 2 × 3 × 53 × 65371

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20787978
Product of the distinct prime numbers

The prime factorization of 20787978 is 2 × 3 × 53 × 65371. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 5, 67, 10, 245, 637, 8587, 7273, 58123, 45118, 469704, 804080, 6366058, 2148306, 60045823, 29967745, 785403954, 108190091, 2440244105, 8639333845

Basic calculations (n = 20787978)

Multiplication

n×y
n×2 41575956
n×3 62363934
n×4 83151912
n×5 103939890

Division

n÷y
n÷2 10393989
n÷3 6929326
n÷3 5196994.5
n÷5 4157595.6

Exponentiation

ny
n2 432140029328484
n3 8.9833174225999E+21
n4 1.8674500494802E+29
n5 3.8820510544694E+36

Nth Root

y√n
2√n 4559.3835109585
3√n 274.96077897949
4√n 67.523207202846
5√n 29.077860567026

Divisors of 20787978

1, 2, 3, 6, 53, 106, 159, 318, 65371, 130742, 196113, 392226, 3464663, 6929326, 10393989, 20787978

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 -20787977
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 20787978 can be divided by 16 positive divisors. The sum of these divisors (counting 20787978) is 1, the average is 0.0625.

Base conversion 20787978

Base System Value
2 Binary 1001111010011001100001010
3 Ternary 1110010010202010
4 Quaternary 1033103030022
5 Quinary 20310203403
6 Senary 2021320350
8 Octal 117231412
10 Decimal 20787978
12 Duodecimal 6b660b6
16 Hexadecimal 13d330a
20 Vigesimal 69i9ii
36 Base36 cdk3u

Cryptographic Hash Functions

md5 f5fb97ea65a94370c013350057b6fc8b
sha1 8395ea8f7d038128175f9f7368e3dc70b3bbd7f0
sha256 795c52368f97cc6dd494fb725a373aa9d012de8437acf38ac0f8390bf12b99bc
sha512 9d7b3c7aa68e0de7cecba09d22c3d182cef0f869357280ca5e7b63310e4c18d3fa2f38cc5d02255f1fc29cdcf4527bd1e59fb88dc8cddf614ca2c2ddf8f8063a
ripemd-160 75bb0649fd30cd8aedb17d6a54dab5be26e66f7c

20787978 as geometric shapes

Circle

Radius = n
Diameter 41575956
Circumference 130614717.93557
Area 1.3576079414604E+15

Sphere

Radius = n
Volume 3.7629232026273E+22
Surface area 5.4304317658418E+15
Circumference 130614717.93557

Square

Length = n
Perimeter 83151912
Area 432140029328484
Diagonal 29398640.421914

Cube

Length = n
Surface area 2592840175970904
Volume 8.9833174225999E+21
Space diagonal 36005834.082624

Equilateral Triangle

Length = n
Perimeter 62363934
Area 1.8712212169531E+14
Altitude 18002917.041312

Triangular Pyramid

Length = n
Surface area 1.8712212169531E+14
Volume 1.0586941111786E+21
Height 9799546.8073045