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

81690908 (number)

81690908 is an even 8-digits composite number following 81690907 and preceding 81690909. In scientific notation, it is written as 8.1690908 × 10^7. The sum of its digits is 41. It has a total of 5 prime factors and 24 positive divisors. There are 37425024 positive integers (up to 81690908) that are relatively prime to 81690908.

Interesting facts

81690908 has 24 divisors, whose sum is 155093232
The reverse of 81690908 is 80909618
Previous prime number is 137

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 41
Digital Root 5

Name

Name	eighty-one million six hundred ninety thousand nine hundred eight

Notation

Scientific notation	8.1690908 × 10^7
Engineering notation	8.1690908 × 10^6

Prime Factorization of 81690908

Prime Factorization 2 × 2 × 13 × 137 × 11467

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	5	Total number of prime factors
rad	Radical	40845454	Product of the distinct prime numbers

The prime factorization of 81690908 is 2 × 2 × 13 × 137 × 11467. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 5, 41, 41, 727, 226, 519, 8838, 55553, 49501, 726235, 394059, 7539935, 8524023, 25649266, 60666972, 591121041, 181704142, 7589384771, 4097004127

Basic calculations (n = 81690908)

Multiplication

n×y

n×2	163381816
n×3	245072724
n×4	326763632
n×5	408454540

Division

n÷y

n÷2	40845454
n÷3	27230302.666667
n÷3	20422727
n÷5	16338181.6

Exponentiation

n^y

n²	6673404449864464
n³	5.4515646896067E+23
n⁴	4.4534326951471E+31
n⁵	3.6380496058345E+39

Nth Root

^y√n

²√n	9038.3022742106
³√n	433.9015895283
⁴√n	95.06998619023
⁵√n	38.232680245613

Divisors of 81690908

1, 2, 4, 13, 26, 52, 137, 274, 548, 1781, 3562, 7124, 11467, 22934, 45868, 149071, 298142, 596284, 1570979, 3141958, 6283916, 20422727, 40845454, 81690908

24 divisors

τ	Total Divisors	24	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81690907	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.041666666666667	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	24	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81690908 can be divided by 24 positive divisors. The sum of these divisors (counting 81690908) is 1, the average is 0.041666666666667.

Base conversion 81690908

Base	System	Value
2	Binary	100110111101000000100011100
3	Ternary	12200201022212012
4	Quaternary	10313220010130
5	Quinary	131403102113
6	Senary	12034530352
8	Octal	467500434
10	Decimal	81690908
12	Duodecimal	234369b8
16	Hexadecimal	4de811c
20	Vigesimal	15ab758
36	Base36	1cmx3w

Cryptographic Hash Functions

md5	28973022eb7b6b4a668fb4d992f90d8c
sha1	6e4bdffb23cb2f6f600d66a1c860c4d6ea487614
sha256	bba6d53b9ba9db66e53df86179b5783c377a38187c6ff422523195e9081ecc57
sha512	536d6c3ecd65648d73c4ee365c826f398fba47ada52d011609f249e330ad681e541bbda307507cee1a6f3fff50673649ff8e25095fc60830c6dc15b23aed774d
ripemd-160	02202f46e7c2e1c128b81e981497e50d6ea5546a

81690908 as geometric shapes

Circle

Radius = n

Diameter	163381816
Circumference	513279112.87576
Area	2.0965118394128E+16

Sphere

Radius = n

Volume	2.2835460772584E+24
Surface area	8.3860473576511E+16
Circumference	513279112.87576

Square

Length = n

Perimeter	326763632
Area	6673404449864464
Diagonal	115528390.01617

Cube

Length = n

Surface area	40040426699186784
Volume	5.4515646896067E+23
Space diagonal	141492803.17243

Equilateral Triangle

Length = n

Perimeter	245072724
Area	2.8896688916554E+15
Altitude	70746401.586217

Triangular Pyramid

Length = n

Surface area	2.8896688916554E+15
Volume	6.4247306001634E+22
Height	38509463.338724