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

28991661 (number)

28991661 is an odd 8-digits composite number following 28991660 and preceding 28991662. In scientific notation, it is written as 2.8991661 × 10^7. The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors. There are 18275840 positive integers (up to 28991661) that are relatively prime to 28991661.

Interesting facts

28991661 has 8 divisors, whose sum is 29748600
The reverse of 28991661 is 16619982
Previous prime number is 89

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6

Name

Name	twenty-eight million nine hundred ninety-one thousand six hundred sixty-one

Notation

Scientific notation	2.8991661 × 10^7
Engineering notation	2.8991661 × 10^6

Prime Factorization of 28991661

Prime Factorization 69 × 89 × 4721

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	28991661	Product of the distinct prime numbers

The prime factorization of 28991661 is 69 × 89 × 4721. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 5, 11, 86, 46, 273, 2626, 1482, 5716, 43950, 629449, 535324, 1495159, 8696829, 32280921, 84940469, 443908191, 700616876, 1212927810, 7472704831

Basic calculations (n = 28991661)

Multiplication

n×y

n×2	57983322
n×3	86974983
n×4	115966644
n×5	144958305

Division

n÷y

n÷2	14495830.5
n÷3	9663887
n÷3	7247915.25
n÷5	5798332.2

Exponentiation

n^y

n²	840516407538921
n³	2.4367966752306E+22
n⁴	7.0646783134213E+29
n⁵	2.0481675873676E+37

Nth Root

^y√n

²√n	5384.3904947543
³√n	307.20223141215
⁴√n	73.37840618843
⁵√n	31.078111433806

Divisors of 28991661

1, 69, 89, 4721, 6141, 325749, 420169, 28991661

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	-28991660	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 28991661 can be divided by 8 positive divisors. The sum of these divisors (counting 28991661) is 1, the average is 0.125.

Base conversion 28991661

Base	System	Value
2	Binary	1101110100110000010101101
3	Ternary	2000112221002020
4	Quaternary	1232212002231
5	Quinary	24410213121
6	Senary	2513220353
8	Octal	156460255
10	Decimal	28991661
12	Duodecimal	98616b9
16	Hexadecimal	1ba60ad
20	Vigesimal	913j31
36	Base36	h9e3x

Cryptographic Hash Functions

md5	a4e44a3bbbbb56fb92c31f3c7e869c0e
sha1	49307f782bcd94a5b72e9093d909898589a25d6d
sha256	c1f5b99e01b8cbd9ea12949bc72dfff7fcac79e6c70663d739205e6aed7c616e
sha512	31a67d143c28dd07af88a3dbfd68c5afb328db903b2b77a2dbd807fe57d2262dc7c9dec5e4064fb01eb974490e537ac6edf993ee8de0b17ca7634aab4b9aed94
ripemd-160	c48454f8bdada2a883a4c896a8198f05d75ad7b3

28991661 as geometric shapes

Circle

Radius = n

Diameter	57983322
Circumference	182159978.42593
Area	2.640560171146E+15

Sphere

Radius = n

Volume	1.0207230044262E+23
Surface area	1.0562240684584E+16
Circumference	182159978.42593

Square

Length = n

Perimeter	115966644
Area	840516407538921
Diagonal	41000400.181923

Cube

Length = n

Surface area	5043098445233526
Volume	2.4367966752306E+22
Space diagonal	50215029.847813

Equilateral Triangle

Length = n

Perimeter	86974983
Area	3.6395428061317E+14
Altitude	25107514.923907

Triangular Pyramid

Length = n

Surface area	3.6395428061317E+14
Volume	2.8717924223807E+21
Height	13666800.060641