Math question: What is the sum of the prime factors of the number 2445?

To find the prime factors, we prime factorize 2445, which is 3 × 5 × 163. The sum of these prime factors is 3 + 5 + 163 = 171. Thus, the sum is 171.

Math question: What is the sum of all odd multiples of 7 between 2445 and 4000?

To find the sum, we first determine the lowest and highest odd multiples of 7 in the given range. Dividing 2445 by 7 gives us 349 remainder 2, so the lowest is 349 * 7 + 2 = 2445. Dividing 4000 by 7 gives us 571 remainder 3, so the highest is 571 * 7 + 3 = 3996. Now, the number of terms is (3996 - 2445) ÷ (7 * 2) + 1 = 181. Using the formula for the sum of an arithmetic series, we calculate the sum as (181/2) * (2445 + 3996) = 588999. Thus, the sum of all odd multiples of 7 between 2445 and 4000 is 588,999.

Question: If a number is divided by 3, multiplied by 4, and then increased by 99, the result is equal to 2445. Find the original number.

Let the original number be x. According to the given condition, ((x / 3) * 4) + 99 = 2445. Simplifying this equation, we have (4x / 3) + 99 = 2445. Subtracting 99 from both sides, we get (4x / 3) = 2346. Now, multiplying by 3/4 on both sides, we obtain x = 2346 * 3/4 = 1759.5. Therefore, the original number is 1759.5.

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

2445 (number)

2445 is an odd 4-digits composite number following 2444 and preceding 2446. In scientific notation, it is written as 2.445 × 10^3. The sum of its digits is 15. It has a total of 2 prime factors and 4 positive divisors. There are 1296 positive integers (up to 2445) that are relatively prime to 2445.

Interesting facts

2445 has 4 divisors, whose sum is 2624
The reverse of 2445 is 5442
Previous prime number is 15

Basic properties

Is Prime? no
Number parity odd
Number length 4
Sum of Digits 15
Digital Root 6

Name

Name	two thousand four hundred forty-five

Notation

Scientific notation	2.445 × 10^3
Engineering notation	2.445 × 10^3

Prime Factorization of 2445

Prime Factorization 15 × 163

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	2445	Product of the distinct prime numbers

The prime factorization of 2445 is 15 × 163. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 4, 63, 41, 359, 444, 2028, 425, 52654, 1193, 74372, 586543, 7587113, 4988975, 40103904, 45695307, 102154028, 806509157, 786594147, 5913447140

Basic calculations (n = 2445)

Multiplication

n×y

n×2	4890
n×3	7335
n×4	9780
n×5	12225

Division

n÷y

n÷2	1222.5
n÷3	815
n÷3	611.25
n÷5	489

Exponentiation

n^y

n²	5978025
n³	14616271125
n⁴	35736782900625
n⁵	87376434192028125

Nth Root

^y√n

²√n	49.446941260304
³√n	13.471820506595
⁴√n	7.031851908303
⁵√n	4.7605351118551

Divisors of 2445

1, 15, 163, 2445

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	-2444	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 2445 can be divided by 4 positive divisors. The sum of these divisors (counting 2445) is 1, the average is 0.25.

Base conversion 2445

Base	System	Value
2	Binary	100110001101
3	Ternary	10100120
4	Quaternary	212031
5	Quinary	34240
6	Senary	15153
8	Octal	4615
10	Decimal	2445
12	Duodecimal	14b9
16	Hexadecimal	98d
20	Vigesimal	625
36	Base36	1vx

Cryptographic Hash Functions

md5	9ed9328611fe3f45b3cce8ffe386ee97
sha1	21188f1974ee9a6a79de64dee0fc849629de3181
sha256	5e4f1761806f5a6ec387efa95dc2b5dc8cb62d37d64b16869e0eb916834dbb7e
sha512	0d5b58c3460158984c063fc8f21e0da0b87ede32ef4886c7693ee512f9b67cf507ee6e22430b0f2fbf18c026e1fe3ff4d61a1ad6ebb5959d8a7dbcd03d99e03c
ripemd-160	a5bdc2e6c7df24c582edeb9a45921a6519e83e08

2445 as geometric shapes

Circle

Radius = n

Diameter	4890
Circumference	15362.388076054
Area	18780519.422976

Sphere

Radius = n

Volume	61224493318.902
Surface area	75122077.691904
Circumference	15362.388076054

Square

Length = n

Perimeter	9780
Area	5978025
Diagonal	3457.7521600022

Cube

Length = n

Surface area	35868150
Volume	14616271125
Space diagonal	4234.8642245059

Equilateral Triangle

Length = n

Perimeter	7335
Area	2588560.7572292
Altitude	2117.432112253

Triangular Pyramid

Length = n

Surface area	2588560.7572292
Volume	1722544071.3581
Height	1152.5840533341