20987788 (number)

20987788 is an even 8-digits composite number following 20987787 and preceding 20987789. In scientific notation, it is written as 2.0987788 × 10^7. The sum of its digits is 49. It has a total of 4 prime factors and 12 positive divisors. There are 10295792 positive integers (up to 20987788) that are relatively prime to 20987788.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0987788 × 10^7
Engineering notation 2.0987788 × 10^6

Prime Factorization of 20987788

Prime Factorization 2 × 2 × 53 × 98999

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10493894
Product of the distinct prime numbers

The prime factorization of 20987788 is 2 × 2 × 53 × 98999. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 5, 50, 15, 974, 776, 7042, 5475, 7528, 68523, 698303, 820853, 5631652, 195899, 72712011, 3402386, 920773550, 306761380, 3522450109, 2920226252

Basic calculations (n = 20987788)

Multiplication

n×y
n×2 41975576
n×3 62963364
n×4 83951152
n×5 104938940

Division

n÷y
n÷2 10493894
n÷3 6995929.3333333
n÷3 5246947
n÷5 4197557.6

Exponentiation

ny
n2 440487245132944
n3 9.2448529175543E+21
n4 1.9402901312481E+29
n5 4.0722397933127E+36

Nth Root

y√n
2√n 4581.2430627505
3√n 275.83892793168
4√n 67.684880606754
5√n 29.133545032988

Divisors of 20987788

1, 2, 4, 53, 106, 212, 98999, 197998, 395996, 5246947, 10493894, 20987788

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20987787
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20987788 can be divided by 12 positive divisors. The sum of these divisors (counting 20987788) is 1, the average is 0.083333333333333.

Base conversion 20987788

Base System Value
2 Binary 1010000000011111110001100
3 Ternary 1110111021211111
4 Quaternary 1100003332030
5 Quinary 20333102123
6 Senary 2025501404
8 Octal 120037614
10 Decimal 20987788
12 Duodecimal 7041864
16 Hexadecimal 1403f8c
20 Vigesimal 6b3998
36 Base36 chua4

Cryptographic Hash Functions

md5 9170f08c00f877e5216f001f437e5f07
sha1 a2ab6515d66a04a844b7ac279796a892e64ef9d0
sha256 9ab7a7781a72c26e7672e12ff3c395dd135a9c11be5bf525810aac8c290d866d
sha512 5a03049fe50096787b6774b1912f2c5c8a96593899b253a597a6dc2180eb5c99fb4e26a1105d16a4bc8abbcd70d0bc73b2e48b0deae32b852fd7f31544cf0c4e
ripemd-160 cc8ea32871f33474158321ea95efd1370d5cdce9

20987788 as geometric shapes

Circle

Radius = n
Diameter 41975576
Circumference 131870161.1918
Area 1.3838314933097E+15

Sphere

Radius = n
Volume 3.8724749345742E+22
Surface area 5.5353259732387E+15
Circumference 131870161.1918

Square

Length = n
Perimeter 83951152
Area 440487245132944
Diagonal 29681214.433811

Cube

Length = n
Surface area 2642923470797664
Volume 9.2448529175543E+21
Space diagonal 36351915.154484

Equilateral Triangle

Length = n
Perimeter 62963364
Area 1.9073657216408E+14
Altitude 18175957.577242

Triangular Pyramid

Length = n
Surface area 1.9073657216408E+14
Volume 1.0895163648458E+21
Height 9893738.1446038