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Properties of the Number 30660

Thirty Thousand Six Hundred Sixty

Basics

Value: 30659 → 30660 → 30661

Parity: even

Prime: No

Previous Prime: 30649

Next Prime: 30661

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 2 × 3 × 5 × 7 × 73

Divisors: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111011111000100

Octal: 73704

Duodecimal: 158B0

Hexadecimal: 77c4

Square: 940035600

Square Root: 175.0999714448863

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Triangle read by rows: row n is the first row of the matrix M[n]n-1, where M[n] is the n X n tridiagonal matrix with main diagonal (3,4,4,...) and super- and subdiagonals (1,1,1,...). A124574
A partition product of Stirling1 type [parameter k = 3] with biggest-part statistic (triangle read by rows). A157393
a(n) = 1·2*3 - 4·5*6 + 7·8*9 - 10·11·12 + 13·14·15 - ... + (up to n). A319543
a(n) = 3·2*1 - 6·5*4 + 9·8*7 - 12·11·10 + 15·14·13 - 18·17·16 + ... - (up to the n-th term). A319886
4th level triangle related to Eulerian numbers and binomial transforms (A062254 is third level, A062253 is second level, triangle of Eulerian numbers is first level and triangle with Z(0,0)=1 and Z(n,k)=0 otherwise is 0th level). A62255
a(1) = 5; a(n+1) = a(n)-th nonprime, where nonprimes begin at 4. A25010
Nonnegative values·of solutions (x, y) to the Diophantine equation x2+(x+343)2 = y2. A118611
Number of Lyndon words on {1,2,3} with an odd number of 1's and an odd number of 2's. A136704
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median minus the lower median of every 2X2 subblock. A236127
a(n) = 25·n2 + n. A173089