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

81397907 (number)

81397907 is an odd 8-digits composite number following 81397906 and preceding 81397908. In scientific notation, it is written as 8.1397907 × 10^7. The sum of its digits is 44. It has a total of 2 prime factors and 4 positive divisors. There are 81227496 positive integers (up to 81397907) that are relatively prime to 81397907.

Interesting facts

81397907 has 4 divisors, whose sum is 81568320
The reverse of 81397907 is 70979318
Previous prime number is 479

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8

Name

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

Notation

Scientific notation	8.1397907 × 10^7
Engineering notation	8.1397907 × 10^6

Prime Factorization of 81397907

Prime Factorization 479 × 169933

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81397907	Product of the distinct prime numbers

The prime factorization of 81397907 is 479 × 169933. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 3, 99, 3, 798, 317, 2635, 2044, 59502, 19557, 557186, 744572, 703228, 73604, 64862200, 64780208, 608913504, 232518635, 3374920361, 8280354959

Basic calculations (n = 81397907)

Multiplication

n×y

n×2	162795814
n×3	244193721
n×4	325591628
n×5	406989535

Division

n÷y

n÷2	40698953.5
n÷3	27132635.666667
n÷3	20349476.75
n÷5	16279581.4

Exponentiation

n^y

n²	6625619263980649
n³	5.3931154066691E+23
n⁴	4.3898830631231E+31
n⁵	3.5732729331297E+39

Nth Root

^y√n

²√n	9022.0788624352
³√n	433.38220941141
⁴√n	94.984624347497
⁵√n	38.205214961907

Divisors of 81397907

1, 479, 169933, 81397907

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	-81397906	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 81397907 can be divided by 4 positive divisors. The sum of these divisors (counting 81397907) is 1, the average is 0.25.

Base conversion 81397907

Base	System	Value
2	Binary	100110110100000100010010011
3	Ternary	12200011102221022
4	Quaternary	10312200202103
5	Quinary	131314213112
6	Senary	12024350055
8	Octal	466404223
10	Decimal	81397907
12	Duodecimal	2331532b
16	Hexadecimal	4da0893
20	Vigesimal	158eef7
36	Base36	1cgn0z

Cryptographic Hash Functions

md5	53b4c00661b1f856fc79f6a849ecf292
sha1	40468e7878b9b95ae439a9af8eba10e2aabcbfdc
sha256	d1eea536b8428d735e301cd5b0433842aa0a4e2f750fc9f7b1a2ce6c30e043df
sha512	cba21ec020b5ebc46e914c4df43ae4f59973dde1f485aae24e0bdcc08e90b832bf7dc2104c1c8723f40fe9a3da52d310cd98b1a79deb76b62ffdb4aa6d8d9970
ripemd-160	1bf06bfd5b2ce0d7594f2c7da830fb773bf13bcb

81397907 as geometric shapes

Circle

Radius = n

Diameter	162795814
Circumference	511438133.29757
Area	2.0814996805205E+16

Sphere

Radius = n

Volume	2.2590628988738E+24
Surface area	8.3259987220818E+16
Circumference	511438133.29757

Square

Length = n

Perimeter	325591628
Area	6625619263980649
Diagonal	115114024.02818

Cube

Length = n

Surface area	39753715583883894
Volume	5.3931154066691E+23
Space diagonal	140985310.55377

Equilateral Triangle

Length = n

Perimeter	244193721
Area	2.8689772992054E+15
Altitude	70492655.276883

Triangular Pyramid

Length = n

Surface area	2.8689772992054E+15
Volume	6.3558474596289E+22
Height	38371341.342728