1991388 (number)

1991388 is an even 7-digits composite number following 1991387 and preceding 1991389. In scientific notation, it is written as 1.991388 × 10^6. The sum of its digits is 39. It has a total of 5 prime factors and 24 positive divisors. There are 561600 positive integers (up to 1991388) that are relatively prime to 1991388.

Interesting facts

Basic properties

Name

Name one million nine hundred ninety-one thousand three hundred eighty-eight

Notation

Scientific notation 1.991388 × 10^6
Engineering notation 1.991388 × 10^6

Prime Factorization of 1991388

Prime Factorization 2 × 2 × 21 × 151 × 157

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 995694
Product of the distinct prime numbers

The prime factorization of 1991388 is 2 × 2 × 21 × 151 × 157. Since it has a total of 5 prime factors.

Most popular turbo-numbers

Basic calculations (n = 1991388)

Multiplication

n×y
n×2 3982776
n×3 5974164
n×4 7965552
n×5 9956940

Division

n÷y
n÷2 995694
n÷3 663796
n÷3 497847
n÷5 398277.6

Exponentiation

ny
n2 3965626166544
n3 7897100360541723072
n4 1.5726190892778E+25
n5 3.1316947829588E+31

Nth Root

y√n
2√n 1411.1654757682
3√n 125.81100413209
4√n 37.565482504131
5√n 18.189936256372

Divisors of 1991388

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -1991387
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1991388 can be divided by 24 positive divisors. The sum of these divisors (counting 1991388) is 1, the average is 0.041666666666667.

Base conversion 1991388

Base System Value
2 Binary 111100110001011011100
3 Ternary 10202011200010
4 Quaternary 13212023130
5 Quinary 1002211023
6 Senary 110403220
8 Octal 7461334
10 Decimal 1991388
12 Duodecimal 800510
16 Hexadecimal 1e62dc
20 Vigesimal c8i98
36 Base36 16okc

Cryptographic Hash Functions

md5 c4de6c54703da62a4fda310782b494ce
sha1 c301085f184ac4c35f76414edb4c87c9eca162eb
sha256 797a244cbe7e508877274fcfd12e93499ac21ef6175befd75d31f8e42748476c
sha512 f3a185fcafd1a68b3d16868aa0cb802becb81d4d6cbf129e9c0f2e0f39fe229d6fb25043d6e93ae99d478a677986089b98465fa6e82744d33e72ff96b4d31d8e
ripemd-160 a6ad400a59cff492fcf2a2bff1ef572b58d3ec82

1991388 as geometric shapes

Circle

Radius = n
Diameter 3982776
Circumference 12512259.822494
Area 12458382031698

Sphere

Radius = n
Volume 3.3079296636452E+19
Surface area 49833528126792
Circumference 12512259.822494

Square

Length = n
Perimeter 7965552
Area 3965626166544
Diagonal 2816247.917547

Cube

Length = n
Surface area 23793756999264
Volume 7897100360541723072
Space diagonal 3449185.193583

Equilateral Triangle

Length = n
Perimeter 5974164
Area 1717166501069.7
Altitude 1724592.5967915

Triangular Pyramid

Length = n
Surface area 1717166501069.7
Volume 9.3068220277496E+17
Height 938749.30584901