1285387988 (number)

1285387988 is an even 10-digits composite number following 1285387987 and preceding 1285387989. In scientific notation, it is written as 1.285387988 × 10^9. The sum of its digits is 59. It has a total of 3 prime factors and 6 positive divisors. There are 642693992 positive integers (up to 1285387988) that are relatively prime to 1285387988.

Interesting facts

Basic properties

Name

Name one billion two hundred eighty-five million three hundred eighty-seven thousand nine hundred eighty-eight

Notation

Scientific notation 1.285387988 × 10^9
Engineering notation 1.285387988 × 10^9

Prime Factorization of 1285387988

Prime Factorization 2 × 2 × 321346997

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 642693994
Product of the distinct prime numbers

The prime factorization of 1285387988 is 2 × 2 × 321346997. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 5, 76, 83, 884, 770, 4804, 5999, 23118, 93596, 71115, 927070, 2598998, 7017541, 27028514, 66418993, 226147136, 817302971, 4064398124, 146706401

Basic calculations (n = 1285387988)

Multiplication

n×y
n×2 2570775976
n×3 3856163964
n×4 5141551952
n×5 6426939940

Division

n÷y
n÷2 642693994
n÷3 428462662.66667
n÷3 321346997
n÷5 257077597.6

Exponentiation

ny
n2 1652222279694688144
n3 2.1237466718255E+27
n4 2.7298384615195E+36
n5 3.5089015676176E+45

Nth Root

y√n
2√n 35852.307987074
3√n 1087.2883775122
4√n 189.34705698023
5√n 66.344793613828

Divisors of 1285387988

1, 2, 4, 321346997, 642693994, 1285387988

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 -1285387987
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 1285387988 can be divided by 6 positive divisors. The sum of these divisors (counting 1285387988) is 1, the average is 0.16666666666667.

Base conversion 1285387988

Base System Value
2 Binary 1001100100111010111011011010100
3 Ternary 10022120200110211112
4 Quaternary 1030213113123110
5 Quinary 10113024403423
6 Senary 331314154152
8 Octal 11447273324
10 Decimal 1285387988
12 Duodecimal 2ba582958
16 Hexadecimal 4c9d76d4
20 Vigesimal 101dd9j8
36 Base36 l9abpw

Cryptographic Hash Functions

md5 b574b9843cc74442aee5447014f0ca0d
sha1 1649f5bdde9b52e96f9fd7bbae3f75aaddbb63be
sha256 228de975eb32c5b24c2ca4489735eaae12e21bd237c5aa00667809258a1531d2
sha512 af4a6aec22de3ac19b50495c83520d2332645e6e67b5a17a647fb3453bacd2053f566d37d09da9d0850f3ffbc58cdd149b4439baf898629e93b9a3e9cb102150
ripemd-160 c69e942d1a920a83d091e12a14ca20360c90de08

1285387988 as geometric shapes

Circle

Radius = n
Diameter 2570775976
Circumference 8076330920.2267
Area 5.1906093759862E+18

Sphere

Radius = n
Volume 8.8959292563905E+27
Surface area 2.0762437503945E+19
Circumference 8076330920.2267

Square

Length = n
Perimeter 5141551952
Area 1652222279694688144
Diagonal 1817813125.5411

Cube

Length = n
Surface area 9.9133336781681E+18
Volume 2.1237466718255E+27
Space diagonal 2226357302.6547

Equilateral Triangle

Length = n
Perimeter 3856163964
Area 7.1543323345712E+17
Altitude 1113178651.3274

Triangular Pyramid

Length = n
Surface area 7.1543323345712E+17
Volume 2.5028594552837E+26
Height 605937708.51369