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

81998521 (number)

81998521 is an odd 8-digits composite number following 81998520 and preceding 81998522. In scientific notation, it is written as 8.1998521 × 10^7. The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors. There are 74544100 positive integers (up to 81998521) that are relatively prime to 81998521.

Interesting facts

81998521 has 4 divisors, whose sum is 89452944
The reverse of 81998521 is 12589918
Previous prime number is 11

Basic properties

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

Name

Name	eighty-one million nine hundred ninety-eight thousand five hundred twenty-one

Notation

Scientific notation	8.1998521 × 10^7
Engineering notation	8.1998521 × 10^6

Prime Factorization of 81998521

Prime Factorization 11 × 7454411

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81998521	Product of the distinct prime numbers

The prime factorization of 81998521 is 11 × 7454411. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 4, 79, 44, 139, 2, 7762, 5830, 60176, 19991, 804524, 893211, 15570, 9381302, 17319130, 810471, 595622922, 615163972, 7273028618, 7677915749

Basic calculations (n = 81998521)

Multiplication

n×y

n×2	163997042
n×3	245995563
n×4	327994084
n×5	409992605

Division

n÷y

n÷2	40999260.5
n÷3	27332840.333333
n÷3	20499630.25
n÷5	16399704.2

Exponentiation

n^y

n²	6723757446187441
n³	5.5133816615011E+23
n⁴	4.5208914195161E+31
n⁵	3.7070641000191E+39

Nth Root

^y√n

²√n	9055.3034736556
³√n	434.44553657412
⁴√n	95.159358308343
⁵√n	38.261430556053

Divisors of 81998521

1, 11, 7454411, 81998521

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	-81998520	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 81998521 can be divided by 4 positive divisors. The sum of these divisors (counting 81998521) is 1, the average is 0.25.

Base conversion 81998521

Base	System	Value
2	Binary	100111000110011001010111001
3	Ternary	12201021221211021
4	Quaternary	10320303022321
5	Quinary	131442423041
6	Senary	12045302441
8	Octal	470631271
10	Decimal	81998521
12	Duodecimal	23564a21
16	Hexadecimal	4e332b9
20	Vigesimal	15c9g61
36	Base36	1ctigp

Cryptographic Hash Functions

md5	b91fc399ddb745955d96d740ae80652e
sha1	e87b328b2c514ae08e798c7c6a9698e400254a2c
sha256	93b1a2097cc7c6e195901d8330ef62d73ddcf69f872c4a18afbd28defdc968bb
sha512	c19b2de46f08f6e84e30a456acf6edf50bebdd7ff942e8635974cfd02241cc3f4fb4837da6fd4e20363fd51c8a33ac67756d057a4b9c705b5775ac7163bf0efb
ripemd-160	57d1cec27353d984a15a27a2a83f1685615d7f39

81998521 as geometric shapes

Circle

Radius = n

Diameter	163997042
Circumference	515211902.35766
Area	2.1123306997462E+16

Sphere

Radius = n

Volume	2.3094399098945E+24
Surface area	8.4493227989849E+16
Circumference	515211902.35766

Square

Length = n

Perimeter	327994084
Area	6723757446187441
Diagonal	115963420.49274

Cube

Length = n

Surface area	40342544677124646
Volume	5.5133816615011E+23
Space diagonal	142025604.5175

Equilateral Triangle

Length = n

Perimeter	245995563
Area	2.9114723786416E+15
Altitude	71012802.258752

Triangular Pyramid

Length = n

Surface area	2.9114723786416E+15
Volume	6.4975826001949E+22
Height	38654473.497578