28871987 (number)

28871987 is an odd 8-digits composite number following 28871986 and preceding 28871988. In scientific notation, it is written as 2.8871987 × 10^7. The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors. There are 28767480 positive integers (up to 28871987) that are relatively prime to 28871987.

Interesting facts

Basic properties

Name

Name twenty-eight million eight hundred seventy-one thousand nine hundred eighty-seven

Notation

Scientific notation 2.8871987 × 10^7
Engineering notation 2.8871987 × 10^6

Prime Factorization of 28871987

Prime Factorization 277 × 104231

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28871987
Product of the distinct prime numbers

The prime factorization of 28871987 is 277 × 104231. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 1, 87, 96, 453, 986, 1866, 232, 19563, 76568, 598017, 425957, 9195826, 2230140, 2746989, 60137793, 138766165, 525660556, 4472265800, 9933851520

Basic calculations (n = 28871987)

Multiplication

n×y
n×2 57743974
n×3 86615961
n×4 115487948
n×5 144359935

Division

n÷y
n÷2 14435993.5
n÷3 9623995.6666667
n÷3 7217996.75
n÷5 5774397.4

Exponentiation

ny
n2 833591633328169
n3 2.406744680076E+22
n4 6.9487501115472E+29
n5 2.0062422288684E+37

Nth Root

y√n
2√n 5373.2659528447
3√n 306.77895082253
4√n 73.302564435664
5√n 31.052411642475

Divisors of 28871987

1, 277, 104231, 28871987

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 -28871986
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 28871987 can be divided by 4 positive divisors. The sum of these divisors (counting 28871987) is 1, the average is 0.25.

Base conversion 28871987

Base System Value
2 Binary 1101110001000110100110011
3 Ternary 2000022211220212
4 Quaternary 1232020310303
5 Quinary 24342400422
6 Senary 2510454335
8 Octal 156106463
10 Decimal 28871987
12 Duodecimal 98043ab
16 Hexadecimal 1b88d33
20 Vigesimal 908jj7
36 Base36 h6trn

Cryptographic Hash Functions

md5 dd2f74cc18568e726518eee82fa549fc
sha1 ab84deb9d6d6e9d495370c9aace3cb5a2be7339e
sha256 85073d3ee5a564c2281ebbed7f98fca58f75038c4feb632d600fd2a2da7e2855
sha512 c22730852f7523bbf43c6f7c01bb110d79b3bd2c0dc244798610defcac242c15850ab6f01ba87bd8150b7d784cb4787a75e0f13377b42223f8638c6c47f8985e
ripemd-160 d05cbd4d602bd3bb7a0125ccc95196b959c25817

28871987 as geometric shapes

Circle

Radius = n
Diameter 57743974
Circumference 181408044.50748
Area 2.6188053513577E+15

Sphere

Radius = n
Volume 1.0081348541324E+23
Surface area 1.0475221405431E+16
Circumference 181408044.50748

Square

Length = n
Perimeter 115487948
Area 833591633328169
Diagonal 40831155.58806

Cube

Length = n
Surface area 5001549799969014
Volume 2.406744680076E+22
Space diagonal 50007748.399468

Equilateral Triangle

Length = n
Perimeter 86615961
Area 3.6095576542218E+14
Altitude 25003874.199734

Triangular Pyramid

Length = n
Surface area 3.6095576542218E+14
Volume 2.8363758064439E+21
Height 13610385.19602