81397948 (number)

81397948 is an even 8-digits composite number following 81397947 and preceding 81397949. In scientific notation, it is written as 8.1397948 × 10^7. The sum of its digits is 49. It has a total of 3 prime factors and 6 positive divisors. There are 40698972 positive integers (up to 81397948) that are relatively prime to 81397948.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1397948 × 10^7
Engineering notation 8.1397948 × 10^6

Prime Factorization of 81397948

Prime Factorization 2 × 2 × 20349487

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 40698974
Product of the distinct prime numbers

The prime factorization of 81397948 is 2 × 2 × 20349487. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 6, 23, 23, 261, 943, 3638, 8695, 43624, 92267, 746919, 455563, 3471485, 7989597, 19752535, 41588296, 741205319, 217592937, 3005394189, 2812660856

Basic calculations (n = 81397948)

Multiplication

n×y
n×2 162795896
n×3 244193844
n×4 325591792
n×5 406989740

Division

n÷y
n÷2 40698974
n÷3 27132649.333333
n÷3 20349487
n÷5 16279589.6

Exponentiation

ny
n2 6625625938610704
n3 5.3931235561849E+23
n4 4.3898919078391E+31
n5 3.5732819323991E+39

Nth Root

y√n
2√n 9022.0811346385
3√n 433.38228217604
4√n 94.984636308397
5√n 38.205218810688

Divisors of 81397948

1, 2, 4, 20349487, 40698974, 81397948

6 divisors

τ Total Divisors 6
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81397947
Sum of the proper positive divisors of n
A Arithmetic Mean 0.16666666666667
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 6
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81397948 can be divided by 6 positive divisors. The sum of these divisors (counting 81397948) is 1, the average is 0.16666666666667.

Base conversion 81397948

Base System Value
2 Binary 100110110100000100010111100
3 Ternary 12200011102222211
4 Quaternary 10312200202330
5 Quinary 131314213243
6 Senary 12024350204
8 Octal 466404274
10 Decimal 81397948
12 Duodecimal 23315364
16 Hexadecimal 4da08bc
20 Vigesimal 158eeh8
36 Base36 1cgn24

Cryptographic Hash Functions

md5 9b7f86bc7f58a051b3db10b2d6cf07f1
sha1 96675972cdcb5192d4fd2f6984a0919c0a3365d8
sha256 ceb7edeb80e76ba45a28ad51fd783e35e2b07487df46ce0aae0ff65a0487b073
sha512 e6e6e8de4228fda212b0fd629ffcbb2575d7718ebba52012286943c88026d4573bd178010370b412bc29e4a536d2e6cda6dc6783d87a4b111837d2e5114238a9
ripemd-160 c1a4310b2f2cc68bde24215291211884200d0de1

81397948 as geometric shapes

Circle

Radius = n
Diameter 162795896
Circumference 511438390.90817
Area 2.0815017774173E+16

Sphere

Radius = n
Volume 2.259066312535E+24
Surface area 8.3260071096693E+16
Circumference 511438390.90817

Square

Length = n
Perimeter 325591792
Area 6625625938610704
Diagonal 115114082.01094

Cube

Length = n
Surface area 39753755631664224
Volume 5.3931235561849E+23
Space diagonal 140985381.56785

Equilateral Triangle

Length = n
Perimeter 244193844
Area 2.868980189405E+15
Altitude 70492690.783925

Triangular Pyramid

Length = n
Surface area 2.868980189405E+15
Volume 6.3558570639254E+22
Height 38371360.670313