Properties of the Number 30989

Thirty Thousand Nine Hundred Eighty-Nine

Basics

Value: 30988 → 30989 → 30990

Parity: odd

Prime: No

Previous Prime: 30983

Next Prime: 31013

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 7 × 19 × 233

Divisors: 1, 7, 19, 133, 233, 1631, 4427, 30989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100100001101

Octal: 74415

Duodecimal: 15B25

Hexadecimal: 790d

Square: 960318121

Square Root: 176.03692794411063

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

Matrix square of Stirling-1 triangle A008275. A39814

E.g.f.: log(1 + log(1 - x))² / 2. A341587

Expansion of 1/(1 - ∑_k>=0 x^2·k*(k+1+1)). A282504

T(n, k) = [x^k] ∑_k=0..n Stirling1(n, k)*FallingFactorial(x, k), triangle read by rows, for n >= 0 and 0 <= k <= n. A325872

Numbers k such that (28·10^k + 191)/3 is prime. A273042

6-automorphic numbers: final digits of 6n² agree with n. A30989