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

81490138 (number)

81490138 is an even 8-digits composite number following 81490137 and preceding 81490139. In scientific notation, it is written as 8.1490138 × 10^7. The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors. There are 40745068 positive integers (up to 81490138) that are relatively prime to 81490138.

Interesting facts

81490138 has 4 divisors, whose sum is 122235210
The reverse of 81490138 is 83109418
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 34
Digital Root 7

Name

Name	eighty-one million four hundred ninety thousand one hundred thirty-eight

Notation

Scientific notation	8.1490138 × 10^7
Engineering notation	8.1490138 × 10^6

Prime Factorization of 81490138

Prime Factorization 2 × 40745069

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81490138	Product of the distinct prime numbers

The prime factorization of 81490138 is 2 × 40745069. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 2, 29, 65, 22, 525, 3469, 9599, 95781, 79593, 126793, 341555, 3427442, 5212649, 33788303, 66532483, 777382183, 675769032, 1960556782, 7378791967

Basic calculations (n = 81490138)

Multiplication

n×y

n×2	162980276
n×3	244470414
n×4	325960552
n×5	407450690

Division

n÷y

n÷2	40745069
n÷3	27163379.333333
n÷3	20372534.5
n÷5	16298027.6

Exponentiation

n^y

n²	6640642591259044
n³	5.4114688117038E+23
n⁴	4.4098134024844E+31
n⁵	3.593563027227E+39

Nth Root

^y√n

²√n	9027.1888204468
³√n	433.54583436825
⁴√n	95.011519409211
⁵√n	38.21386901538

Divisors of 81490138

1, 2, 40745069, 81490138

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	-81490137	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 81490138 can be divided by 4 positive divisors. The sum of these divisors (counting 81490138) is 1, the average is 0.25.

Base conversion 81490138

Base	System	Value
2	Binary	100110110110111000011011010
3	Ternary	12200100010110021
4	Quaternary	10312313003122
5	Quinary	131330141023
6	Senary	12030341054
8	Octal	466670332
10	Decimal	81490138
12	Duodecimal	2335a78a
16	Hexadecimal	4db70da
20	Vigesimal	159656i
36	Base36	1cim6y

Cryptographic Hash Functions

md5	0a1a5ff9d438a36c6f2b80f6dfb4d592
sha1	86e70a561f91c205a6c241b4ac0227e44e257ea6
sha256	f017859acab2cc8b45092103595035341178ae29a26d9c9f2d6b94a697cc962b
sha512	b44e25688317700d056a519ca2951a6a549cfb1d91d826d0d94604ced04211f75cb9c489f4ea7587fd16c362f75c0c0042be1c0497514a440f52c95a53fc8ab5
ripemd-160	18acb4f05b1c50610e02d2c61c5d130f30b13d6e

81490138 as geometric shapes

Circle

Radius = n

Diameter	162980276
Circumference	512017637.76164
Area	2.0862193979815E+16

Sphere

Radius = n

Volume	2.2667507551972E+24
Surface area	8.344877591926E+16
Circumference	512017637.76164

Square

Length = n

Perimeter	325960552
Area	6640642591259044
Diagonal	115244458.35926

Cube

Length = n

Surface area	39843855547554264
Volume	5.4114688117038E+23
Space diagonal	141145059.3318

Equilateral Triangle

Length = n

Perimeter	244470414
Area	2.8754825907416E+15
Altitude	70572529.6659

Triangular Pyramid

Length = n

Surface area	2.8754825907416E+15
Volume	6.3774771548921E+22
Height	38414819.453085