Properties of the Number 30450

Thirty Thousand Four Hundred Fifty

Basics

Value: 30449 → 30450 → 30451

Parity: even

Prime: No

Previous Prime: 30449

Next Prime: 30467

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 ² × 7 × 29

Divisors: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011011110010

Octal: 73362

Duodecimal: 15756

Hexadecimal: 76f2

Square: 927202500

Square Root: 174.49928366615148

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

a(n) = n*(n+1)*(4·n+5)/6. A16061

a(n) = n*(n+1)*(8·n + 1)/6. A132124

Least positive integer k such that prime(k)-k, prime(k)+k, prime(k·n)-k·n, prime(k·n)+k·n, prime(k)+k·n and prime(k·n)+k are all prime. A259492

Consider coefficients U(m,L,k) defined by the identity ∑_k=1..L ∑_j=0..m A302971(m,j)/A304042(m,j) * k^j * (T-k)^j = ∑_k=0..m (-1)^m-k * U(m,L,k) * T^k that holds for all positive integers L,m,T. This sequence gives 3-column table read by rows, where the n-th row lists coefficients U(2,n,k) for k = 0, 1, 2; n >= 1. A316349

Numbers n divisible by exactly two nontrivial permutations (rearrangements) of the digits of n. A90057

Unitary practical numbers that are nonsquarefree. A287173

Expansion of 30·x*(1 + x) / (1 - x)⁴. A316459

z-value of the solution (x,y,z) to 5/n = 1/x + 1/y + 1/z satisfying 0 < x < y < z and having the largest z-value. The·and y components are in A075249 and A075250. A75251

∑_0<j<k<=n s(k)-s(j), where s(j)=A002620(j) is the j-th quarter-square. A206806

Sums of three primorials > 1. A370137