28749991 (number)

28749991 is an odd 8-digits composite number following 28749990 and preceding 28749992. In scientific notation, it is written as 2.8749991 × 10^7. The sum of its digits is 49. It has a total of 3 prime factors and 8 positive divisors. There are 27668928 positive integers (up to 28749991) that are relatively prime to 28749991.

Interesting facts

Basic properties

Name

Name twenty-eight million seven hundred forty-nine thousand nine hundred ninety-one

Notation

Scientific notation 2.8749991 × 10^7
Engineering notation 2.8749991 × 10^6

Prime Factorization of 28749991

Prime Factorization 29 × 347 × 2857

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28749991
Product of the distinct prime numbers

The prime factorization of 28749991 is 29 × 347 × 2857. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 28749991)

Multiplication

n×y
n×2 57499982
n×3 86249973
n×4 114999964
n×5 143749955

Division

n÷y
n÷2 14374995.5
n÷3 9583330.3333333
n÷3 7187497.75
n÷5 5749998.2

Exponentiation

ny
n2 826561982500081
n3 2.3763649557819E+22
n4 6.8320471091446E+29
n5 1.9642129289948E+37

Nth Root

y√n
2√n 5361.9018081274
3√n 306.34625179485
4√n 73.225008078712
5√n 31.026125338799

Divisors of 28749991

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28749990
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28749991 can be divided by 8 positive divisors. The sum of these divisors (counting 28749991) is 1, the average is 0.125.

Base conversion 28749991

Base System Value
2 Binary 1101101101011000010100111
3 Ternary 2000002122120111
4 Quaternary 1231223002213
5 Quinary 24324444431
6 Senary 2504113451
8 Octal 155530247
10 Decimal 28749991
12 Duodecimal 9765887
16 Hexadecimal 1b6b0a7
20 Vigesimal 8jdejb
36 Base36 h47mv

Cryptographic Hash Functions

md5 4a2637ae945bacf61395443a6fa1ac92
sha1 f39e65b3fae7d1adff816fa758ef7da7279831b0
sha256 e497207156a96aa049ba5a0df9492f9692188df7c19ea44d4e7e8fd324aa8848
sha512 9d8b7f947ad03807fd8ecd60bbfba3431fc3277012624c8f2706c19da68ccb4bb1cda72bfebecec7e5bede8c4cb9f36a0df3cf2294a14a6a221879c97b42af0d
ripemd-160 d0f6d3e423564e593133405755154e24adde7415

28749991 as geometric shapes

Circle

Radius = n
Diameter 57499982
Circumference 180641521.03275
Area 2.5967210519589E+15

Sphere

Radius = n
Volume 9.9540942497771E+22
Surface area 1.0386884207835E+16
Circumference 180641521.03275

Square

Length = n
Perimeter 114999964
Area 826561982500081
Diagonal 40658627.190304

Cube

Length = n
Surface area 4959371895000486
Volume 2.3763649557819E+22
Space diagonal 49796445.129148

Equilateral Triangle

Length = n
Perimeter 86249973
Area 3.5791183732375E+14
Altitude 24898222.564574

Triangular Pyramid

Length = n
Surface area 3.5791183732375E+14
Volume 2.8005729580125E+21
Height 13552875.730101