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

81397947 (number)

81397947 is an odd 8-digits composite number following 81397946 and preceding 81397948. In scientific notation, it is written as 8.1397947 × 10^7. The sum of its digits is 48. It has a total of 2 prime factors and 4 positive divisors. There are 54265296 positive integers (up to 81397947) that are relatively prime to 81397947.

Interesting facts

81397947 has 4 divisors, whose sum is 108530600
The reverse of 81397947 is 74979318
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3

Name

Name	eighty-one million three hundred ninety-seven thousand nine hundred forty-seven

Notation

Scientific notation	8.1397947 × 10^7
Engineering notation	8.1397947 × 10^6

Prime Factorization of 81397947

Prime Factorization 3 × 27132649

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81397947	Product of the distinct prime numbers

The prime factorization of 81397947 is 3 × 27132649. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 4, 29, 97, 609, 950, 4011, 2834, 38342, 58221, 308481, 448817, 2670742, 8946766, 97636778, 67781105, 830528552, 312825401, 7855895244, 1530553988

Basic calculations (n = 81397947)

Multiplication

n×y

n×2	162795894
n×3	244193841
n×4	325591788
n×5	406989735

Division

n÷y

n÷2	40698973.5
n÷3	27132649
n÷3	20349486.75
n÷5	16279589.4

Exponentiation

n^y

n²	6625625775814809
n³	5.3931233574161E+23
n⁴	4.3898916921142E+31
n⁵	3.5732817129045E+39

Nth Root

^y√n

²√n	9022.0810792189
³√n	433.3822804013
⁴√n	94.984636016668
⁵√n	38.205218716815

Divisors of 81397947

1, 3, 27132649, 81397947

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	-81397946	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 81397947 can be divided by 4 positive divisors. The sum of these divisors (counting 81397947) is 1, the average is 0.25.

Base conversion 81397947

Base	System	Value
2	Binary	100110110100000100010111011
3	Ternary	12200011102222210
4	Quaternary	10312200202323
5	Quinary	131314213242
6	Senary	12024350203
8	Octal	466404273
10	Decimal	81397947
12	Duodecimal	23315363
16	Hexadecimal	4da08bb
20	Vigesimal	158eeh7
36	Base36	1cgn23

Cryptographic Hash Functions

md5	7ee71c6c09a48c0424d376d769e88627
sha1	916f0278408ead6f80c32b9bf90ce9e8b9ec65b2
sha256	e2128f6078a504cc8e59774accebf8522c59081c77c6cbebcc2407e5ca112207
sha512	1b902c0b17093fdf0d48a843792f9bd5192c8eb9899ea7d5039eca3e168b4d36505706ea70a4a4cdb3cbce86a0c514a575273ba041a3efad12294da09fd61fa6
ripemd-160	8e99181ed0b9678b26ded9d9a361363924bf9e5c

81397947 as geometric shapes

Circle

Radius = n

Diameter	162795894
Circumference	511438384.62498
Area	2.0815017262735E+16

Sphere

Radius = n

Volume	2.2590662292749E+24
Surface area	8.326006905094E+16
Circumference	511438384.62498

Square

Length = n

Perimeter	325591788
Area	6625625775814809
Diagonal	115114080.59673

Cube

Length = n

Surface area	39753754654888854
Volume	5.3931233574161E+23
Space diagonal	140985379.8358

Equilateral Triangle

Length = n

Perimeter	244193841
Area	2.8689801189123E+15
Altitude	70492689.917899

Triangular Pyramid

Length = n

Surface area	2.8689801189123E+15
Volume	6.3558568296741E+22
Height	38371360.198909