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

81489418 (number)

81489418 is an even 8-digits composite number following 81489417 and preceding 81489419. In scientific notation, it is written as 8.1489418 × 10^7. The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors. There are 40744708 positive integers (up to 81489418) that are relatively prime to 81489418.

Interesting facts

81489418 has 4 divisors, whose sum is 122234130
The reverse of 81489418 is 81498418
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 43
Digital Root 7

Name

Name	eighty-one million four hundred eighty-nine thousand four hundred eighteen

Notation

Scientific notation	8.1489418 × 10^7
Engineering notation	8.1489418 × 10^6

Prime Factorization of 81489418

Prime Factorization 2 × 40744709

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81489418	Product of the distinct prime numbers

The prime factorization of 81489418 is 2 × 40744709. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 3, 20, 12, 150, 789, 823, 173, 24488, 1460, 745607, 146677, 8257191, 3592377, 63423586, 94907603, 224549295, 964363685, 2505729260, 8712992337

Basic calculations (n = 81489418)

Multiplication

n×y

n×2	162978836
n×3	244468254
n×4	325957672
n×5	407447090

Division

n÷y

n÷2	40744709
n÷3	27163139.333333
n÷3	20372354.5
n÷5	16297883.6

Exponentiation

n^y

n²	6640525245978724
n³	5.4113253750911E+23
n⁴	4.4096575542481E+31
n⁵	3.5934042767498E+39

Nth Root

^y√n

²√n	9027.148940834
³√n	433.54455751059
⁴√n	95.011309541728
⁵√n	38.213801487987

Divisors of 81489418

1, 2, 40744709, 81489418

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	-81489417	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 81489418 can be divided by 4 positive divisors. The sum of these divisors (counting 81489418) is 1, the average is 0.25.

Base conversion 81489418

Base	System	Value
2	Binary	100110110110110111000001010
3	Ternary	12200100002110121
4	Quaternary	10312312320022
5	Quinary	131330130133
6	Senary	12030333454
8	Octal	466667012
10	Decimal	81489418
12	Duodecimal	2335a28a
16	Hexadecimal	4db6e0a
20	Vigesimal	15963ai
36	Base36	1cilmy

Cryptographic Hash Functions

md5	ba4afdbcbebaf14065f57f06217228b4
sha1	cf631e64f3710691d58324036e659d52f273ee54
sha256	1a464736b3f4ca1db87c71901b358975469b6937a7b7884f4367afd1183e77e4
sha512	b4d2a875374a1368f7458bbfef898bf07cc193c9b85dad6781f702e28c4d4724e559ce7c75f3cb0bd0f63c20b81a5a0ff977d9209ec3ed09b13beee946aca267
ripemd-160	6a296afbcaccbd4022330028b92e6b611213c8b8

81489418 as geometric shapes

Circle

Radius = n

Diameter	162978836
Circumference	512013113.86822
Area	2.0861825328744E+16

Sphere

Radius = n

Volume	2.2666906726094E+24
Surface area	8.3447301314977E+16
Circumference	512013113.86822

Square

Length = n

Perimeter	325957672
Area	6640525245978724
Diagonal	115243440.12549

Cube

Length = n

Surface area	39843151475872344
Volume	5.4113253750911E+23
Space diagonal	141143812.25522

Equilateral Triangle

Length = n

Perimeter	244468254
Area	2.8754317787447E+15
Altitude	70571906.127609

Triangular Pyramid

Length = n

Surface area	2.8754317787447E+15
Volume	6.377308113223E+22
Height	38414480.04183