261777987 (number)

261777987 is an odd 9-digits composite number following 261777986 and preceding 261777988. In scientific notation, it is written as 2.61777987 × 10^8. The sum of its digits is 54. It has a total of 4 prime factors and 16 positive divisors. There are 174291264 positive integers (up to 261777987) that are relatively prime to 261777987.

Interesting facts

Basic properties

Name

Name two hundred sixty-one million seven hundred seventy-seven thousand nine hundred eighty-seven

Notation

Scientific notation 2.61777987 × 10^8
Engineering notation 2.61777987 × 10^6

Prime Factorization of 261777987

Prime Factorization 27 × 3 × 1009 × 3203

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 261777987
Product of the distinct prime numbers

The prime factorization of 261777987 is 27 × 3 × 1009 × 3203. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 2, 81, 30, 829, 745, 1192, 5663, 97683, 86063, 224728, 974620, 7040518, 8422459, 86167618, 52962616, 951221391, 567146167, 8917251350, 9778231810

Basic calculations (n = 261777987)

Multiplication

n×y
n×2 523555974
n×3 785333961
n×4 1047111948
n×5 1308889935

Division

n÷y
n÷2 130888993.5
n÷3 87259329
n÷3 65444496.75
n÷5 52355597.4

Exponentiation

ny
n2 68527714477772169
n3 1.7939047149702E+25
n4 4.6960476515471E+33
n5 1.2293219010781E+42

Nth Root

y√n
2√n 16179.554598319
3√n 639.70199912254
4√n 127.1988781331
5√n 48.259923012339

Divisors of 261777987

1, 3, 27, 81, 1009, 3027, 3203, 9609, 27243, 81729, 86481, 259443, 3231827, 9695481, 87259329, 261777987

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -261777986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 261777987 can be divided by 16 positive divisors. The sum of these divisors (counting 261777987) is 1, the average is 0.0625.

Base conversion 261777987

Base System Value
2 Binary 1111100110100110101001000011
3 Ternary 200020120200220000
4 Quaternary 33212212221003
5 Quinary 1014003343422
6 Senary 41550451043
8 Octal 1746465103
10 Decimal 261777987
12 Duodecimal 73803a83
16 Hexadecimal f9a6a43
20 Vigesimal 41g24j7
36 Base36 4but6r

Cryptographic Hash Functions

md5 3d0e92d3597a573171be1c62c1e924cb
sha1 373edbd66c2545e795f227526335756a1ff6509a
sha256 abfc5dddbacf935c10626b7a785acc3a9945dcf22aabb04ebc76da5ac1f43e26
sha512 ef5188b7c1127d95f88dc4a1e798f970a2a055708413fa261fce348e8dc5fb7dc5db1a25099dcc6177a89659f29a78a536e0ba0cb989468c557eb3636c09a706
ripemd-160 0c2ce34eb81a917bf934dc782533b729985e62e9

261777987 as geometric shapes

Circle

Radius = n
Diameter 523555974
Circumference 1644799601.6614
Area 2.1528616437067E+17

Sphere

Radius = n
Volume 7.5142904983873E+25
Surface area 8.6114465748267E+17
Circumference 1644799601.6614

Square

Length = n
Perimeter 1047111948
Area 68527714477772169
Diagonal 370209979.54613

Cube

Length = n
Surface area 411166286866633014
Volume 1.7939047149702E+25
Space diagonal 453412773.78711

Equilateral Triangle

Length = n
Perimeter 785333961
Area 2.9673370800519E+16
Altitude 226706386.89355

Triangular Pyramid

Length = n
Surface area 2.9673370800519E+16
Volume 2.1141369812632E+24
Height 123403326.51538