20987789 (number)

20987789 is an odd 8-digits composite number following 20987788 and preceding 20987790. In scientific notation, it is written as 2.0987789 × 10^7. The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors. There are 20881056 positive integers (up to 20987789) that are relatively prime to 20987789.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0987789 × 10^7
Engineering notation 2.0987789 × 10^6

Prime Factorization of 20987789

Prime Factorization 197 × 106537

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20987789
Product of the distinct prime numbers

The prime factorization of 20987789 is 197 × 106537. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 3, 25, 92, 865, 877, 6652, 7158, 89541, 53837, 288613, 251045, 6475464, 4171435, 7782532, 66739236, 628345822, 383743492, 6103327785, 6032509353

Basic calculations (n = 20987789)

Multiplication

n×y
n×2 41975578
n×3 62963367
n×4 83951156
n×5 104938945

Division

n÷y
n÷2 10493894.5
n÷3 6995929.6666667
n÷3 5246947.25
n÷5 4197557.8

Exponentiation

ny
n2 440487287108521
n3 9.2448542390161E+21
n4 1.9402905010422E+29
n5 4.0722407634579E+36

Nth Root

y√n
2√n 4581.2431718912
3√n 275.83893231263
4√n 67.684881412995
5√n 29.133545310612

Divisors of 20987789

1, 197, 106537, 20987789

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20987788
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20987789 can be divided by 4 positive divisors. The sum of these divisors (counting 20987789) is 1, the average is 0.25.

Base conversion 20987789

Base System Value
2 Binary 1010000000011111110001101
3 Ternary 1110111021211112
4 Quaternary 1100003332031
5 Quinary 20333102124
6 Senary 2025501405
8 Octal 120037615
10 Decimal 20987789
12 Duodecimal 7041865
16 Hexadecimal 1403f8d
20 Vigesimal 6b3999
36 Base36 chua5

Cryptographic Hash Functions

md5 fc609d744d165a8c81b69987129a369a
sha1 513e4f3ad730e23a5a717529476d89b3769762f4
sha256 2af9de5b704f017dc2cd69ad1076bea40232939e13a03f9b9f367b0c79cc9ee2
sha512 13900d7ea7c0af22b1a3c09a1ac14e0ee1b7709db325c68bebe3872c871d7154c50d151e209dd78933c1b7e5b13b10f65f1363fb1e348823d560e4a208242198
ripemd-160 faad83123b8a69c93e4b716a1e53e5d52b2eedb4

20987789 as geometric shapes

Circle

Radius = n
Diameter 41975578
Circumference 131870167.47499
Area 1.3838316251798E+15

Sphere

Radius = n
Volume 3.8724754881068E+22
Surface area 5.5353265007193E+15
Circumference 131870167.47499

Square

Length = n
Perimeter 83951156
Area 440487287108521
Diagonal 29681215.848025

Cube

Length = n
Surface area 2642923722651126
Volume 9.2448542390161E+21
Space diagonal 36351916.886535

Equilateral Triangle

Length = n
Perimeter 62963367
Area 1.9073659034003E+14
Altitude 18175958.443268

Triangular Pyramid

Length = n
Surface area 1.9073659034003E+14
Volume 1.0895165205816E+21
Height 9893738.6160083