28756988 (number)

28756988 is an even 8-digits composite number following 28756987 and preceding 28756989. In scientific notation, it is written as 2.8756988 × 10^7. The sum of its digits is 53. It has a total of 5 prime factors and 24 positive divisors. There are 13083840 positive integers (up to 28756988) that are relatively prime to 28756988.

Interesting facts

Basic properties

Name

Name twenty-eight million seven hundred fifty-six thousand nine hundred eighty-eight

Notation

Scientific notation 2.8756988 × 10^7
Engineering notation 2.8756988 × 10^6

Prime Factorization of 28756988

Prime Factorization 2 × 2 × 13 × 71 × 7789

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 14378494
Product of the distinct prime numbers

The prime factorization of 28756988 is 2 × 2 × 13 × 71 × 7789. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 2, 11, 87, 77, 266, 976, 1782, 93131, 41208, 572754, 149954, 3601574, 9320422, 49420336, 16722955, 397897536, 24033431, 8404855456, 439572854

Basic calculations (n = 28756988)

Multiplication

n×y
n×2 57513976
n×3 86270964
n×4 115027952
n×5 143784940

Division

n÷y
n÷2 14378494
n÷3 9585662.6666667
n÷3 7189247
n÷5 5751397.6

Exponentiation

ny
n2 826964358832144
n3 2.3781004143364E+22
n4 6.8387005077866E+29
n5 1.9666042843801E+37

Nth Root

y√n
2√n 5362.5542421499
3√n 306.37110201545
4√n 73.229462937741
5√n 31.027635382183

Divisors of 28756988

1, 2, 4, 13, 26, 52, 71, 142, 284, 923, 1846, 3692, 7789, 15578, 31156, 101257, 202514, 405028, 553019, 1106038, 2212076, 7189247, 14378494, 28756988

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 -28756987
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 28756988 can be divided by 24 positive divisors. The sum of these divisors (counting 28756988) is 1, the average is 0.041666666666667.

Base conversion 28756988

Base System Value
2 Binary 1101101101100101111111100
3 Ternary 2000010000011122
4 Quaternary 1231230233330
5 Quinary 24330210423
6 Senary 2504210112
8 Octal 155545774
10 Decimal 28756988
12 Duodecimal 9769938
16 Hexadecimal 1b6cbfc
20 Vigesimal 8jec98
36 Base36 h4d18

Cryptographic Hash Functions

md5 ad3d105e5533623f5abdb6c70ddf9534
sha1 b9537f1ee8d2c1c82ba4cf9011bbb2f955a88624
sha256 ba6bd949cab000c21253dc79c234e9960784e9db498c67161d66488e6df0412e
sha512 fb0b11a0dd8dd7607bfd787860b4fc6d28f9d4a5f260044341817f62388d60aa8316473763a25e9623ec5be066ef830c2518dde9f2878b499b0ac4c3618849a7
ripemd-160 44b09a68bb2549a72be291a4b09c1b9b1e25dbff

28756988 as geometric shapes

Circle

Radius = n
Diameter 57513976
Circumference 180685484.48034
Area 2.5979851544877E+15

Sphere

Radius = n
Volume 9.9613637215706E+22
Surface area 1.0391940617951E+16
Circumference 180685484.48034

Square

Length = n
Perimeter 115027952
Area 826964358832144
Diagonal 40668522.4426

Cube

Length = n
Surface area 4961786152992864
Volume 2.3781004143364E+22
Space diagonal 49808564.288649

Equilateral Triangle

Length = n
Perimeter 86270964
Area 3.5808607138647E+14
Altitude 24904282.144324

Triangular Pyramid

Length = n
Surface area 3.5808607138647E+14
Volume 2.802618215533E+21
Height 13556174.147533