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

81691631 (number)

81691631 is an odd 8-digits composite number following 81691630 and preceding 81691632. In scientific notation, it is written as 8.1691631 × 10^7. The sum of its digits is 35. It has a total of 3 prime factors and 8 positive divisors. There are 69828408 positive integers (up to 81691631) that are relatively prime to 81691631.

Interesting facts

81691631 has 8 divisors, whose sum is 93619200
The reverse of 81691631 is 13619618
Previous prime number is 367

Basic properties

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

Name

Name	eighty-one million six hundred ninety-one thousand six hundred thirty-one

Notation

Scientific notation	8.1691631 × 10^7
Engineering notation	8.1691631 × 10^6

Prime Factorization of 81691631

Prime Factorization 7 × 367 × 31799

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81691631	Product of the distinct prime numbers

The prime factorization of 81691631 is 7 × 367 × 31799. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 3, 98, 12, 924, 989, 7172, 4933, 62077, 13836, 24221, 877885, 7913726, 9937019, 97527154, 3266885, 136028655, 630034768, 3465376671, 1792405404

Basic calculations (n = 81691631)

Multiplication

n×y

n×2	163383262
n×3	245074893
n×4	326766524
n×5	408458155

Division

n÷y

n÷2	40845815.5
n÷3	27230543.666667
n÷3	20422907.75
n÷5	16338326.2

Exponentiation

n^y

n²	6673522575440161
n³	5.4517094370303E+23
n⁴	4.4535903564909E+31
n⁵	3.6382106002762E+39

Nth Root

^y√n

²√n	9038.3422705715
³√n	433.902869597
⁴√n	95.070196542195
⁵√n	38.232747920537

Divisors of 81691631

1, 7, 367, 2569, 31799, 222593, 11670233, 81691631

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	-81691630	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 81691631 can be divided by 8 positive divisors. The sum of these divisors (counting 81691631) is 1, the average is 0.125.

Base conversion 81691631

Base	System	Value
2	Binary	100110111101000001111101111
3	Ternary	12200201100211222
4	Quaternary	10313220033233
5	Quinary	131403113011
6	Senary	12034533555
8	Octal	467501757
10	Decimal	81691631
12	Duodecimal	234372bb
16	Hexadecimal	4de83ef
20	Vigesimal	15ab91b
36	Base36	1cmxnz

Cryptographic Hash Functions

md5	5fd16f251da8c702e23c01431474cd4b
sha1	4fa23c8b2f401a91b9cc7582f4d6d2c663803e5c
sha256	dde401a51d1f760b9c7bc7342e0d323496ac183c43e6ee5de36036ab3ca7c952
sha512	f049d2e00065b943928e0c70b723d55de82cc4594bbe4c4e40177fbf8584fc2706d60070192033ac3b5fd9ce28264d9eabc2430cf8c1329a5181d9c14597f2ab
ripemd-160	de5449d02c34c9f2cff31c81ec20f24950009dd0

81691631 as geometric shapes

Circle

Radius = n

Diameter	163383262
Circumference	513283655.61874
Area	2.0965489496568E+16

Sphere

Radius = n

Volume	2.2836067089174E+24
Surface area	8.3861957986274E+16
Circumference	513283655.61874

Square

Length = n

Perimeter	326766524
Area	6673522575440161
Diagonal	115529412.49258

Cube

Length = n

Surface area	40041135452640966
Volume	5.4517094370303E+23
Space diagonal	141494055.44517

Equilateral Triangle

Length = n

Perimeter	245074893
Area	2.8897200415301E+15
Altitude	70747027.722584

Triangular Pyramid

Length = n

Surface area	2.8897200415301E+15
Volume	6.424901186638E+22
Height	38509804.164193