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

28991231 (number)

28991231 is an odd 8-digits composite number following 28991230 and preceding 28991232. In scientific notation, it is written as 2.8991231 × 10^7. The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors. There are 28056000 positive integers (up to 28991231) that are relatively prime to 28991231.

Interesting facts

28991231 has 4 divisors, whose sum is 29926464
The reverse of 28991231 is 13219982
Previous prime number is 31

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8

Name

Name	twenty-eight million nine hundred ninety-one thousand two hundred thirty-one

Notation

Scientific notation	2.8991231 × 10^7
Engineering notation	2.8991231 × 10^6

Prime Factorization of 28991231

Prime Factorization 31 × 935201

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	28991231	Product of the distinct prime numbers

The prime factorization of 28991231 is 31 × 935201. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 6, 74, 58, 669, 549, 8427, 847, 95873, 6229, 443934, 379224, 3623258, 7064460, 31710361, 26776029, 571967483, 420053267, 2319590133, 9280757928

Basic calculations (n = 28991231)

Multiplication

n×y

n×2	57982462
n×3	86973693
n×4	115964924
n×5	144956155

Division

n÷y

n÷2	14495615.5
n÷3	9663743.6666667
n÷3	7247807.75
n÷5	5798246.2

Exponentiation

n^y

n²	840491474895361
n³	2.4366882502222E+22
n⁴	7.0642591937178E+29
n⁵	2.0480157012895E+37

Nth Root

^y√n

²√n	5384.3505643671
³√n	307.20071261205
⁴√n	73.378134102518
⁵√n	31.078019244074

Divisors of 28991231

1, 31, 935201, 28991231

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-28991230	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28991231 can be divided by 4 positive divisors. The sum of these divisors (counting 28991231) is 1, the average is 0.25.

Base conversion 28991231

Base	System	Value
2	Binary	1101110100101111011111111
3	Ternary	2000112220111022
4	Quaternary	1232211323333
5	Quinary	24410204411
6	Senary	2513214355
8	Octal	156457377
10	Decimal	28991231
12	Duodecimal	98613bb
16	Hexadecimal	1ba5eff
20	Vigesimal	913i1b
36	Base36	h9drz

Cryptographic Hash Functions

md5	e2474a9c4ec63b9818d021e0731939cb
sha1	5067355a209f8ed18fe9393be82a49adfa0d409a
sha256	cca9ac17e3c6d14de0258b7792c7788672355fbae0a98f06a3f2a3ea223ca0f6
sha512	f71004b5392bfe46ca534a516c9171a83a2791c0ebf2e16a6d466f2d46973cd1e7d159d4fdcc38230dfaa885f7cc9b8457f5515ab926f77c7dc6e091f3de23e3
ripemd-160	5b67c63db49d492bcd4160bcdd1f330ba573edd3

28991231 as geometric shapes

Circle

Radius = n

Diameter	57982462
Circumference	182157276.65625
Area	2.6404818429361E+15

Sphere

Radius = n

Volume	1.0206775874649E+23
Surface area	1.0561927371744E+16
Circumference	182157276.65625

Square

Length = n

Perimeter	115964924
Area	840491474895361
Diagonal	40999792.070091

Cube

Length = n

Surface area	5042948849372166
Volume	2.4366882502222E+22
Space diagonal	50214285.065966

Equilateral Triangle

Length = n

Perimeter	86973693
Area	3.6394348446182E+14
Altitude	25107142.532983

Triangular Pyramid

Length = n

Surface area	3.6394348446182E+14
Volume	2.8716646422828E+21
Height	13666597.356697