Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

28387890 (number)

28387890 is an even 8-digits composite number following 28387889 and preceding 28387891. In scientific notation, it is written as 2.8387890 × 10^7. The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors. There are 7570080 positive integers (up to 28387890) that are relatively prime to 28387890.

Interesting facts

28387890 has 8 divisors, whose sum is 43528236
The reverse of 28387890 is 09878382
Previous prime number is 45

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 45
Digital Root 9

Name

Name	twenty-eight million three hundred eighty-seven thousand eight hundred ninety

Notation

Scientific notation	2.8387890 × 10^7
Engineering notation	2.8387890 × 10^6

Prime Factorization of 28387890

Prime Factorization 2 × 45 × 315421

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	28387890	Product of the distinct prime numbers

The prime factorization of 28387890 is 2 × 45 × 315421. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 8, 60, 4, 665, 357, 623, 2362, 27975, 25007, 325686, 888256, 8067347, 4386916, 67593532, 78026344, 392611935, 956140793, 1628894174, 4588632422

Basic calculations (n = 28387890)

Multiplication

n×y

n×2	56775780
n×3	85163670
n×4	113551560
n×5	141939450

Division

n÷y

n÷2	14193945
n÷3	9462630
n÷3	7096972.5
n÷5	5677578

Exponentiation

n^y

n²	805872298652100
n³	2.2877014168183E+22
n⁴	6.4943016173482E+29
n⁵	1.843595199401E+37

Nth Root

^y√n

²√n	5328.0287161388
³√n	305.05468875105
⁴√n	72.993347067653
⁵√n	30.94757490309

Divisors of 28387890

1, 2, 45, 90, 315421, 630842, 14193945, 28387890

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-28387889	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28387890 can be divided by 8 positive divisors. The sum of these divisors (counting 28387890) is 1, the average is 0.125.

Base conversion 28387890

Base	System	Value
2	Binary	1101100010010101000110010
3	Ternary	1222102020212100
4	Quaternary	1230102220302
5	Quinary	24231403030
6	Senary	2452241230
8	Octal	154225062
10	Decimal	28387890
12	Duodecimal	9610216
16	Hexadecimal	1b12a32
20	Vigesimal	8h89ea
36	Base36	gwg8i

Cryptographic Hash Functions

md5	7df4bbad20cad969626699d3a63216e4
sha1	719aec714b24d2a1005709e1f991d08a09dbd4ca
sha256	b9af9ae0e63a0680972dcb5d58122b9bc3ebee2e4fe5eaaa330156d15772dbc0
sha512	5c59b5cd9eb32eaf6aa5007c47f011c3bae48e918b2a75d5132624f8f64e95c15fd5fd1845c06d1fe46626bc933be32b90745aaefaa9c16be3124dd0de086ffd
ripemd-160	73d52d7dfc9cede266acca0670d4bb6fdcfd775f

28387890 as geometric shapes

Circle

Radius = n

Diameter	56775780
Circumference	178366373.34983
Area	2.531722493177E+15

Sphere

Radius = n

Volume	9.5827012862444E+22
Surface area	1.0126889972708E+16
Circumference	178366373.34983

Square

Length = n

Perimeter	113551560
Area	805872298652100
Diagonal	40146539.045156

Cube

Length = n

Surface area	4835233791912600
Volume	2.2877014168183E+22
Space diagonal	49169267.799676

Equilateral Triangle

Length = n

Perimeter	85163670
Area	3.4895294141944E+14
Altitude	24584633.899838

Triangular Pyramid

Length = n

Surface area	3.4895294141944E+14
Volume	2.6960819752705E+21
Height	13382179.681719