21991489 (number)

21991489 is an odd 8-digits composite number following 21991488 and preceding 21991490. In scientific notation, it is written as 2.1991489 × 10^7. The sum of its digits is 43. It has a total of 4 prime factors and 16 positive divisors. There are 18950400 positive integers (up to 21991489) that are relatively prime to 21991489.

Interesting facts

Basic properties

Name

Name twenty-one million nine hundred ninety-one thousand four hundred eighty-nine

Notation

Scientific notation 2.1991489 × 10^7
Engineering notation 2.1991489 × 10^6

Prime Factorization of 21991489

Prime Factorization 17 × 13 × 151 × 659

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21991489
Product of the distinct prime numbers

The prime factorization of 21991489 is 17 × 13 × 151 × 659. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 10, 81, 40, 135, 684, 4982, 95, 6042, 57266, 687810, 508373, 6053646, 9765003, 47003478, 86166340, 221037855, 876632958, 9672462413, 2945772699

Basic calculations (n = 21991489)

Multiplication

n×y
n×2 43982978
n×3 65974467
n×4 87965956
n×5 109957445

Division

n÷y
n÷2 10995744.5
n÷3 7330496.3333333
n÷3 5497872.25
n÷5 4398297.8

Exponentiation

ny
n2 483625588437121
n3 1.0635646808233E+22
n4 2.3389370979115E+29
n5 5.1436709460413E+36

Nth Root

y√n
2√n 4689.50839641
3√n 280.16779483413
4√n 68.479985370983
5√n 29.407013919056

Divisors of 21991489

1, 13, 17, 151, 221, 659, 1963, 2567, 8567, 11203, 33371, 99509, 145639, 1293617, 1691653, 21991489

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 -21991488
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 21991489 can be divided by 16 positive divisors. The sum of these divisors (counting 21991489) is 1, the average is 0.0625.

Base conversion 21991489

Base System Value
2 Binary 1010011111001000001000001
3 Ternary 1112101021122121
4 Quaternary 1103321001001
5 Quinary 21112211424
6 Senary 2103204241
8 Octal 123710101
10 Decimal 21991489
12 Duodecimal 7446681
16 Hexadecimal 14f9041
20 Vigesimal 6h8ie9
36 Base36 d3cqp

Cryptographic Hash Functions

md5 c67e44e96b4c19e2f6d48516b0bf580f
sha1 9328907f5a1015edeb1156aa47ef7a1f39930424
sha256 cf2fcbd30c9dd868973515b4856d8a24447d69286fdc08b9d81c7f496fb8e423
sha512 ad7bdf871149e8ee48b1067b87d46465f8deaff6e009990a55d6925bf58a11b6fe422c1e0d061349cd5f98d69dba7b2261af2e563010aa589b40a21d989518a1
ripemd-160 6a639c0f2c06f60bf6294096bd5e32be3811026b

21991489 as geometric shapes

Circle

Radius = n
Diameter 43982978
Circumference 138176600.5678
Area 1.5193545957221E+15

Sphere

Radius = n
Volume 4.4550493171896E+22
Surface area 6.0774183828884E+15
Circumference 138176600.5678

Square

Length = n
Perimeter 87965956
Area 483625588437121
Diagonal 31100662.000579

Cube

Length = n
Surface area 2901753530622726
Volume 1.0635646808233E+22
Space diagonal 38090376.282092

Equilateral Triangle

Length = n
Perimeter 65974467
Area 2.0941602275337E+14
Altitude 19045188.141046

Triangular Pyramid

Length = n
Surface area 2.0941602275337E+14
Volume 1.2534229967345E+21
Height 10366887.333526