249945981 (number)

249945981 is an odd 9-digits composite number following 249945980 and preceding 249945982. In scientific notation, it is written as 2.49945981 × 10^8. The sum of its digits is 51. It has a total of 2 prime factors and 4 positive divisors. There are 166630652 positive integers (up to 249945981) that are relatively prime to 249945981.

Interesting facts

Basic properties

Name

Name two hundred forty-nine million nine hundred forty-five thousand nine hundred eighty-one

Notation

Scientific notation 2.49945981 × 10^8
Engineering notation 2.49945981 × 10^6

Prime Factorization of 249945981

Prime Factorization 3 × 83315327

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 249945981
Product of the distinct prime numbers

The prime factorization of 249945981 is 3 × 83315327. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 1, 19, 8, 592, 513, 6776, 3704, 99253, 61484, 61447, 236184, 5697505, 8074905, 37359030, 98291750, 27619322, 861737170, 5757538309, 2714871705

Basic calculations (n = 249945981)

Multiplication

n×y
n×2 499891962
n×3 749837943
n×4 999783924
n×5 1249729905

Division

n÷y
n÷2 124972990.5
n÷3 83315327
n÷3 62486495.25
n÷5 49989196.2

Exponentiation

ny
n2 62472993418052361
n3 1.5614873625882E+25
n4 3.902874906612E+33
n5 9.7550789725342E+41

Nth Root

y√n
2√n 15809.679977786
3√n 629.91514856223
4√n 125.73654988819
5√n 47.815558362647

Divisors of 249945981

1, 3, 83315327, 249945981

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 -249945980
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 249945981 can be divided by 4 positive divisors. The sum of these divisors (counting 249945981) is 1, the average is 0.25.

Base conversion 249945981

Base System Value
2 Binary 1110111001011101111101111101
3 Ternary 122102022120102120
4 Quaternary 32321131331331
5 Quinary 1002441232411
6 Senary 40445113153
8 Octal 1671357575
10 Decimal 249945981
12 Duodecimal 6b8587b9
16 Hexadecimal ee5df7d
20 Vigesimal 3i234j1
36 Base36 44t7jx

Cryptographic Hash Functions

md5 f947df96fa552a1539ec3dcfdce83d05
sha1 b0618428ab81b627666fb7b9723a00a6a70940d2
sha256 94e2f23d3303a7e74858bf84e131a47e7d939c20c0282206dd7f974ac57629c1
sha512 b43b56bddf587fbaba9c3a3f24f4494f27f6d759a33ef635d6826248a70c32942a02d32edb8f0a0fc555e6ecff3aef9ae482e88e39b1049a5ae99bc1647cd115
ripemd-160 1cec4a68f1aec998b48f90aad1bb3617039d50f3

249945981 as geometric shapes

Circle

Radius = n
Diameter 499891962
Circumference 1570456915.4078
Area 1.9626469716992E+17

Sphere

Radius = n
Volume 6.540742969307E+25
Surface area 7.8505878867967E+17
Circumference 1570456915.4078

Square

Length = n
Perimeter 999783924
Area 62472993418052361
Diagonal 353476996.19085

Cube

Length = n
Surface area 374837960508314166
Volume 1.5614873625882E+25
Space diagonal 432919138.23965

Equilateral Triangle

Length = n
Perimeter 749837943
Area 2.7051599675246E+16
Altitude 216459569.11982

Triangular Pyramid

Length = n
Surface area 2.7051599675246E+16
Volume 1.8402305047053E+24
Height 117825665.39695