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

81397949 (number)

81397949 is an odd 8-digits composite number following 81397948 and preceding 81397950. In scientific notation, it is written as 8.1397949 × 10^7. The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors. There are 81379740 positive integers (up to 81397949) that are relatively prime to 81397949.

Interesting facts

81397949 has 4 divisors, whose sum is 81416160
The reverse of 81397949 is 94979318
Previous prime number is 10331

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 50
Digital Root 5

Name

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

Notation

Scientific notation	8.1397949 × 10^7
Engineering notation	8.1397949 × 10^6

Prime Factorization of 81397949

Prime Factorization 10331 × 7879

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81397949	Product of the distinct prime numbers

The prime factorization of 81397949 is 10331 × 7879. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 9, 69, 20, 964, 660, 9629, 5811, 99570, 14182, 663487, 877434, 2445240, 2761037, 28166280, 55438118, 376466621, 471286455, 3262484722, 8334265449

Basic calculations (n = 81397949)

Multiplication

n×y

n×2	162795898
n×3	244193847
n×4	325591796
n×5	406989745

Division

n÷y

n÷2	40698974.5
n÷3	27132649.666667
n÷3	20349487.25
n÷5	16279589.8

Exponentiation

n^y

n²	6625626101406601
n³	5.3931237549536E+23
n⁴	4.389892123564E+31
n⁵	3.5732821518937E+39

Nth Root

^y√n

²√n	9022.0811900581
³√n	433.38228395079
⁴√n	94.984636600126
⁵√n	38.205218904561

Divisors of 81397949

1, 7879, 10331, 81397949

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	-81397948	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 81397949 can be divided by 4 positive divisors. The sum of these divisors (counting 81397949) is 1, the average is 0.25.

Base conversion 81397949

Base	System	Value
2	Binary	100110110100000100010111101
3	Ternary	12200011102222212
4	Quaternary	10312200202331
5	Quinary	131314213244
6	Senary	12024350205
8	Octal	466404275
10	Decimal	81397949
12	Duodecimal	23315365
16	Hexadecimal	4da08bd
20	Vigesimal	158eeh9
36	Base36	1cgn25

Cryptographic Hash Functions

md5	810d05c7a7c9277bdaca3389d611219a
sha1	327c8e985f1ed1aa9c4f75582213520ed592a954
sha256	288aba7872c8ee3243c2658813fc60bd4a852210c133c446f62d4c931080bfa6
sha512	26d7ead8c895fde1776e9db3ee21b870b545bb28fa3bcda91e98580898fb3542cecaa0e930b7cd31ec88a4e6a00610ae98fbee0e146b07d6b7deaa5659d7b0e8
ripemd-160	7967a5e13875b4b0c877787f31b558fa38eaac84

81397949 as geometric shapes

Circle

Radius = n

Diameter	162795898
Circumference	511438397.19135
Area	2.0815018285612E+16

Sphere

Radius = n

Volume	2.2590663957951E+24
Surface area	8.3260073142447E+16
Circumference	511438397.19135

Square

Length = n

Perimeter	325591796
Area	6625626101406601
Diagonal	115114083.42515

Cube

Length = n

Surface area	39753756608439606
Volume	5.3931237549536E+23
Space diagonal	140985383.2999

Equilateral Triangle

Length = n

Perimeter	244193847
Area	2.8689802598977E+15
Altitude	70492691.64995

Triangular Pyramid

Length = n

Surface area	2.8689802598977E+15
Volume	6.3558572981766E+22
Height	38371361.141718