30781388 (number)

30781388 is an even 8-digits composite number following 30781387 and preceding 30781389. In scientific notation, it is written as 3.0781388 × 10^7. The sum of its digits is 38. It has a total of 5 prime factors and 24 positive divisors. There are 13539600 positive integers (up to 30781388) that are relatively prime to 30781388.

Interesting facts

Basic properties

Name

Name thirty million seven hundred eighty-one thousand three hundred eighty-eight

Notation

Scientific notation 3.0781388 × 10^7
Engineering notation 3.0781388 × 10^6

Prime Factorization of 30781388

Prime Factorization 2 × 2 × 11 × 31 × 22567

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 15390694
Product of the distinct prime numbers

The prime factorization of 30781388 is 2 × 2 × 11 × 31 × 22567. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 7, 80, 94, 183, 277, 7363, 5027, 97851, 77059, 881810, 684567, 9074701, 2425853, 63246491, 37667702, 922445374, 22268580, 348181052, 6025467613

Basic calculations (n = 30781388)

Multiplication

n×y
n×2 61562776
n×3 92344164
n×4 123125552
n×5 153906940

Division

n÷y
n÷2 15390694
n÷3 10260462.666667
n÷3 7695347
n÷5 6156277.6

Exponentiation

ny
n2 947493847206544
n3 2.9165175738477E+22
n4 8.9774459049426E+29
n5 2.7633824564905E+37

Nth Root

y√n
2√n 5548.0976920022
3√n 313.39788871588
4√n 74.485553579216
5√n 31.452678797652

Divisors of 30781388

1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 682, 1364, 22567, 45134, 90268, 248237, 496474, 699577, 992948, 1399154, 2798308, 7695347, 15390694, 30781388

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 -30781387
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 30781388 can be divided by 24 positive divisors. The sum of these divisors (counting 30781388) is 1, the average is 0.041666666666667.

Base conversion 30781388

Base System Value
2 Binary 1110101011010111111001100
3 Ternary 2010220212010102
4 Quaternary 1311122333030
5 Quinary 30340001023
6 Senary 3015430232
8 Octal 165327714
10 Decimal 30781388
12 Duodecimal a385378
16 Hexadecimal 1d5afcc
20 Vigesimal 9c7d98
36 Base36 ibr2k

Cryptographic Hash Functions

md5 23f1868c22bacc6425efd56f18404d24
sha1 4845ea4666a2533425a805a983c79873da9d4f8f
sha256 3c771efb07b84a10f0264cec403b131d9715c274e80e810d5ccb714153d29100
sha512 6e8e209721d82e190e49700a9ca81cee024eee95f986198c8b6abb5d14bed361babb118fe8fef2416aa7e55922063abf32402a6d61626bdad1112a2416017c12
ripemd-160 6ab033f0366ed79a1b74de42230efb4e728f3948

30781388 as geometric shapes

Circle

Radius = n
Diameter 61562776
Circumference 193405164.81619
Area 2.9766397097056E+15

Sphere

Radius = n
Volume 1.2216680245421E+23
Surface area 1.1906558838822E+16
Circumference 193405164.81619

Square

Length = n
Perimeter 123125552
Area 947493847206544
Diagonal 43531456.378268

Cube

Length = n
Surface area 5684963083239264
Volume 2.9165175738477E+22
Space diagonal 53314927.943491

Equilateral Triangle

Length = n
Perimeter 92344164
Area 4.1027687080516E+14
Altitude 26657463.971745

Triangular Pyramid

Length = n
Surface area 4.1027687080516E+14
Volume 3.4371489231958E+21
Height 14510485.459423