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

28991978 (number)

28991978 is an even 8-digits composite number following 28991977 and preceding 28991979. In scientific notation, it is written as 2.8991978 × 10^7. The sum of its digits is 53. It has a total of 2 prime factors and 4 positive divisors. There are 14495988 positive integers (up to 28991978) that are relatively prime to 28991978.

Interesting facts

28991978 has 4 divisors, whose sum is 43487970
The reverse of 28991978 is 87919982
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 53
Digital Root 8

Name

Name	twenty-eight million nine hundred ninety-one thousand nine hundred seventy-eight

Notation

Scientific notation	2.8991978 × 10^7
Engineering notation	2.8991978 × 10^6

Prime Factorization of 28991978

Prime Factorization 2 × 14495989

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	28991978	Product of the distinct prime numbers

The prime factorization of 28991978 is 2 × 14495989. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 3, 3, 32, 260, 526, 6561, 1582, 97348, 30708, 168269, 814977, 3652970, 5550439, 19709051, 39903009, 716690647, 387623383, 6095913314, 3833410857

Basic calculations (n = 28991978)

Multiplication

n×y

n×2	57983956
n×3	86975934
n×4	115967912
n×5	144959890

Division

n÷y

n÷2	14495989
n÷3	9663992.6666667
n÷3	7247994.5
n÷5	5798395.6

Exponentiation

n^y

n²	840534788352484
n³	2.436876609215E+22
n⁴	7.0649873043076E+29
n⁵	2.0482795649676E+37

Nth Root

^y√n

²√n	5384.4199316175
³√n	307.20335107609
⁴√n	73.378606770758
⁵√n	31.078179396233

Divisors of 28991978

1, 2, 14495989, 28991978

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	-28991977	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 28991978 can be divided by 4 positive divisors. The sum of these divisors (counting 28991978) is 1, the average is 0.25.

Base conversion 28991978

Base	System	Value
2	Binary	1101110100110000111101010
3	Ternary	2000112221111222
4	Quaternary	1232212013222
5	Quinary	24410220403
6	Senary	2513222042
8	Octal	156460752
10	Decimal	28991978
12	Duodecimal	9861922
16	Hexadecimal	1ba61ea
20	Vigesimal	913jii
36	Base36	h9ecq

Cryptographic Hash Functions

md5	323fb83839a944738861bc664badf922
sha1	9210714a11a8940791f2eb9e4dc2b6a200948123
sha256	d0e7cb5a9e416f3a60e0cf66ff36b6e85a11792b9e27c891534fa1da56ac1175
sha512	5dfe05984546465de404e5b0ac39938855a494918ba8e90df5871c4487154b899b13c34365d6a549d032ed57ca1f2a01b75965107840a146b4ba7e1748d25fd4
ripemd-160	27e496399330aebac57ce445e54a7bc52cf6491d

28991978 as geometric shapes

Circle

Radius = n

Diameter	57983956
Circumference	182161970.19567
Area	2.6406179161748E+15

Sphere

Radius = n

Volume	1.0207564870953E+23
Surface area	1.0562471664699E+16
Circumference	182161970.19567

Square

Length = n

Perimeter	115967912
Area	840534788352484
Diagonal	41000848.487622

Cube

Length = n

Surface area	5043208730114904
Volume	2.436876609215E+22
Space diagonal	50215578.907919

Equilateral Triangle

Length = n

Perimeter	86975934
Area	3.6396223973891E+14
Altitude	25107789.45396

Triangular Pyramid

Length = n

Surface area	3.6396223973891E+14
Volume	2.8718866254847E+21
Height	13666949.495874