Properties of the Number 30056

Thirty Thousand Fifty-Six

Basics

Value: 30055 → 30056 → 30057

Parity: even

Prime: No

Previous Prime: 30047

Next Prime: 30059

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 13 × 17 ²

Divisors: 1, 2, 4, 8, 13, 17, 26, 34, 52, 68

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111010101101000

Octal: 72550

Duodecimal: 15488

Hexadecimal: 7568

Square: 903363136

Square Root: 173.3666634621547

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

Second differences of Catalan numbers A000108. A26012

a(n) = 26·n². A244633

Numbers k for which A003415(k) >= A276086(k) > k, where A003415 is the arithmetic derivative and A276086 is the primorial base exp-function. A351229

Numbers k such that A322582(k) <= A276086(k) <= A348507(k). A392602

a(n) = T(n, [n/2]), where T is the array defined in A026009. A26021

Expansion of (1+x³*C⁴)*C, where C = (1-(1-4·x)^1/2)/(2·x) is g.f. for Catalan numbers, A000108. A71738

Indices of primes in the sequence defined by A(0) = 23, A(n) = 10·A(n-1) + 63 for n > 0. A101973

a(n) = 225·n² - 199·n + 44. A156812

Number of n X n symmetric (0,1)-matrices containing four ones. A185355

Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically. A207588