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

81749893 (number)

81749893 is an odd 8-digits composite number following 81749892 and preceding 81749894. In scientific notation, it is written as 8.1749893 × 10^7. The sum of its digits is 49. It has a total of 2 prime factors and 4 positive divisors. There are 81201088 positive integers (up to 81749893) that are relatively prime to 81749893.

Interesting facts

81749893 has 4 divisors, whose sum is 82298700
The reverse of 81749893 is 39894718
Previous prime number is 149

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 49
Digital Root 4

Name

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

Notation

Scientific notation	8.1749893 × 10^7
Engineering notation	8.1749893 × 10^6

Prime Factorization of 81749893

Prime Factorization 149 × 548657

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81749893	Product of the distinct prime numbers

The prime factorization of 81749893 is 149 × 548657. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 1, 79, 33, 183, 562, 311, 4566, 10131, 55040, 5092, 948648, 7055629, 330264, 58219302, 62258457, 536661649, 431400683, 2026336862, 2044351961

Basic calculations (n = 81749893)

Multiplication

n×y

n×2	163499786
n×3	245249679
n×4	326999572
n×5	408749465

Division

n÷y

n÷2	40874946.5
n÷3	27249964.333333
n÷3	20437473.25
n÷5	16349978.6

Exponentiation

n^y

n²	6683045005511449
n³	5.4633821411475E+23
n⁴	4.4663090545692E+31
n⁵	3.6512028731596E+39

Nth Root

^y√n

²√n	9041.5647428971
³√n	434.00599742539
⁴√n	95.087142889547
⁵√n	38.238199840502

Divisors of 81749893

1, 149, 548657, 81749893

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	-81749892	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 81749893 can be divided by 4 positive divisors. The sum of these divisors (counting 81749893) is 1, the average is 0.25.

Base conversion 81749893

Base	System	Value
2	Binary	100110111110110011110000101
3	Ternary	12200211022202211
4	Quaternary	10313312132011
5	Quinary	131411444033
6	Senary	12040103421
8	Octal	467663605
10	Decimal	81749893
12	Duodecimal	23464b71
16	Hexadecimal	4df6785
20	Vigesimal	15aieed
36	Base36	1co6md

Cryptographic Hash Functions

md5	07678f5d7609da51bce2cf0bac8c00ac
sha1	1354b771c990ed3ee86d23e58b23b9fad68d4353
sha256	5895978e07431feea18d4f4cf2a00771bd545161f69c385bc21653bcc81d3428
sha512	5d48813690b325cc2947a50602618b9edf7fc058732c80081d123240c9699170200e27da006a0517aafbc7ffb23a5678e9deab1783785a4cf4e20e86500c6006
ripemd-160	97a6c7a513391043a09268dc22510df976600140

81749893 as geometric shapes

Circle

Radius = n

Diameter	163499786
Circumference	513649726.5611
Area	2.0995405092925E+16

Sphere

Radius = n

Volume	2.2884961597843E+24
Surface area	8.3981620371699E+16
Circumference	513649726.5611

Square

Length = n

Perimeter	326999572
Area	6683045005511449
Diagonal	115611807.40315

Cube

Length = n

Surface area	40098270033068694
Volume	5.4633821411475E+23
Space diagonal	141594968.18932

Equilateral Triangle

Length = n

Perimeter	245249679
Area	2.8938433747038E+15
Altitude	70797484.09466

Triangular Pyramid

Length = n

Surface area	2.8938433747038E+15
Volume	6.4386576003647E+22
Height	38537269.134383