81597978 (number)

81597978 is an even 8-digits composite number following 81597977 and preceding 81597979. In scientific notation, it is written as 8.1597978 × 10^7. The sum of its digits is 54. It has a total of 5 prime factors and 32 positive divisors. There are 20966400 positive integers (up to 81597978) that are relatively prime to 81597978.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred ninety-seven thousand nine hundred seventy-eight

Notation

Scientific notation 8.1597978 × 10^7
Engineering notation 8.1597978 × 10^6

Prime Factorization of 81597978

Prime Factorization 2 × 63 × 11 × 113 × 521

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81597978
Product of the distinct prime numbers

The prime factorization of 81597978 is 2 × 63 × 11 × 113 × 521. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 2, 86, 98, 627, 406, 2863, 7060, 49129, 35913, 401743, 315569, 7899561, 2997508, 4280485, 35351223, 687899391, 408777150, 9533172123, 8138432672

Basic calculations (n = 81597978)

Multiplication

n×y
n×2 163195956
n×3 244793934
n×4 326391912
n×5 407989890

Division

n÷y
n÷2 40798989
n÷3 27199326
n÷3 20399494.5
n÷5 16319595.6

Exponentiation

ny
n2 6658230013688484
n3 5.4329810617589E+23
n4 4.4332026915182E+31
n5 3.6174037569204E+39

Nth Root

y√n
2√n 9033.1599122345
3√n 433.73699440833
4√n 95.042937203321
5√n 38.223977732984

Divisors of 81597978

1, 2, 11, 22, 63, 113, 126, 226, 521, 693, 1042, 1243, 1386, 2486, 5731, 7119, 11462, 14238, 32823, 58873, 65646, 78309, 117746, 156618, 361053, 647603, 722106, 1295206, 3708999, 7417998, 40798989, 81597978

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81597977
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81597978 can be divided by 32 positive divisors. The sum of these divisors (counting 81597978) is 1, the average is 0.03125.

Base conversion 81597978

Base System Value
2 Binary 100110111010001011000011010
3 Ternary 12200112121101100
4 Quaternary 10313101120122
5 Quinary 131342113403
6 Senary 12032532230
8 Octal 467213032
10 Decimal 81597978
12 Duodecimal 233b1076
16 Hexadecimal 4dd161a
20 Vigesimal 159jeii
36 Base36 1ckxei

Cryptographic Hash Functions

md5 01522b493723fb2d173c7677d549709e
sha1 4cdef77e787259ebff7329939b7ba8be4c7dc188
sha256 66a6f5edbbb76f735a378d902388265b05a1cb5cf1caf38c5bead3e7fb0bede9
sha512 32239072a18b1f1b8cec105c7b6f1f31fe3823b49ce153f7e0f6eb25185d257db44380ce7451365c1e4e6189859894179048734bf49fa14c498a65faffb6feb5
ripemd-160 da5f83a96a02eabc7ccefdde125f78fb984f18e8

81597978 as geometric shapes

Circle

Radius = n
Diameter 163195956
Circumference 512695216.46516
Area 2.0917446496915E+16

Sphere

Radius = n
Volume 2.2757617854286E+24
Surface area 8.3669785987659E+16
Circumference 512695216.46516

Square

Length = n
Perimeter 326391912
Area 6658230013688484
Diagonal 115396967.14982

Cube

Length = n
Surface area 39949380082130904
Volume 5.4329810617589E+23
Space diagonal 141331843.69089

Equilateral Triangle

Length = n
Perimeter 244793934
Area 2.8830981680471E+15
Altitude 70665921.845444

Triangular Pyramid

Length = n
Surface area 2.8830981680471E+15
Volume 6.402829584713E+22
Height 38465655.716607