Math question: What is the sum of the digits in the number 7985?

To find the sum of the digits in the number 7985, we add the individual digits together. 7 + 9 + 8 + 5 equals 29. Therefore, the sum of the digits in the number 7985 is 29. The sum of the digits can be found by adding each digit separately, disregarding their position within the number.

Math question: What is the sum of the first two prime numbers and the product of the next two prime numbers after 7985?

To solve this, we need to find the first four prime numbers after 7985, which are 7993, 8009, 8011, and 8017. Adding the first two primes, 7993 and 8009, we get 16002. Multiplying the next two primes, 8011 and 8017, we get 64118687. Therefore, the sum of the first two prime numbers and the product of the next two prime numbers after 7985 is 16002 + 64118687 = 64134689.

Math Question: The number 7985 is equal to the sum of three consecutive positive integers. What is the largest integer in this sum?

Let's assume the largest integer in the sum is x. According to the given information, the sum of three consecutive positive integers is equal to 7985. So, we can form an equation: (x-1) + x + (x+1) = 7985. Solving this equation, we get 3x = 7985, or x = 7985/3, which is not an integer. Therefore, there is no whole number solution where 7985 can be expressed as the sum of three consecutive integers.

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

7985 (number)

7985 is an odd 4-digits composite number following 7984 and preceding 7986. In scientific notation, it is written as 7.985 × 10^3. The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors. There are 6384 positive integers (up to 7985) that are relatively prime to 7985.

Interesting facts

7985 has 4 divisors, whose sum is 9588
The reverse of 7985 is 5897
Previous prime number is 5

Basic properties

Is Prime? no
Number parity odd
Number length 4
Sum of Digits 29
Digital Root 2

Name

Name	seven thousand nine hundred eighty-five

Notation

Scientific notation	7.985 × 10^3
Engineering notation	7.985 × 10^3

Prime Factorization of 7985

Prime Factorization 5 × 1597

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	7985	Product of the distinct prime numbers

The prime factorization of 7985 is 5 × 1597. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 6, 11, 49, 95, 621, 8766, 3335, 21784, 98475, 62280, 205607, 8503887, 6533884, 32328400, 78176922, 800718213, 107569292, 171190129, 1754063689

Basic calculations (n = 7985)

Multiplication

n×y

n×2	15970
n×3	23955
n×4	31940
n×5	39925

Division

n÷y

n÷2	3992.5
n÷3	2661.6666666667
n÷3	1996.25
n÷5	1597

Exponentiation

n^y

n²	63760225
n³	509125396625
n⁴	4065366292050625
n⁵	3.2461949842024E+19

Nth Root

^y√n

²√n	89.35882720806
³√n	19.987492179352
⁴√n	9.4529798057576
⁵√n	6.0319118213951

Divisors of 7985

1, 5, 1597, 7985

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	-7984	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 7985 can be divided by 4 positive divisors. The sum of these divisors (counting 7985) is 1, the average is 0.25.

Base conversion 7985

Base	System	Value
2	Binary	1111100110001
3	Ternary	101221202
4	Quaternary	1330301
5	Quinary	223420
6	Senary	100545
8	Octal	17461
10	Decimal	7985
12	Duodecimal	4755
16	Hexadecimal	1f31
20	Vigesimal	jj5
36	Base36	65t

Cryptographic Hash Functions

md5	6bf733bb7f81e866306e9b5f012419cb
sha1	3f127c8ca704902318cfe48e5511f7a6abb15d49
sha256	9da5ea12989dd32ea3097f2000509f7f5b19d1fc6c9ff778e13ff70b43f8f210
sha512	b4dddf7b1bc0f43438288c50ea9fc9f2a9bfde7d2fe000891824df1461dd0d4cf0c97c07553cc355fb71d7bd17cae1ccd34c0eecd2375ef62cd41824097f43e7
ripemd-160	dffa41f7312ea50bb54f44047095ab93de5857d3

7985 as geometric shapes

Circle

Radius = n

Diameter	15970
Circumference	50171.234677829
Area	200308654.45123

Sphere

Radius = n

Volume	2132619474390.8
Surface area	801234617.80493
Circumference	50171.234677829

Square

Length = n

Perimeter	31940
Area	63760225
Diagonal	11292.495295549

Cube

Length = n

Surface area	382561350
Volume	509125396625
Space diagonal	13830.425698437

Equilateral Triangle

Length = n

Perimeter	23955
Area	27608987.300506
Altitude	6915.2128492187

Triangular Pyramid

Length = n

Surface area	27608987.300506
Volume	60001003404.638
Height	3764.1650985164