Properties of the Number 27949

Twenty-Seven Thousand Nine Hundred Forty-Nine

Basics

Value: 27948 → 27949 → 27950

Parity: odd

Prime: No

Previous Prime: 27947

Next Prime: 27953

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 19 × 1471

Divisors: 1, 19, 1471, 27949

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110100101101

Octal: 66455

Duodecimal: 14211

Hexadecimal: 6d2d

Square: 781146601

Square Root: 167.1795442032308

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

Partial sums of A299281. A299282

Expansion of e.g.f. exp(-x)/(1-2·x). A354

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of the e.g.f. exp(-x)/(1 - k·x). A320032

Triangle read by rows: T(n, k) = n! * 2^k * hypergeom([-k], [-n], -1/2). A374427

Numerators of convergents to 1 + 2/(3 + 4/(5 + 6/(7 + ...))). A113012

Form the difference table of the sequence {2^k*k!}, then divide k-th column entries by 2^k*k!. Array read by ascending antidiagonals, T(n, k) for n, k >= 0. A143410

Number of rooted trees with n nodes with every leaf at height 7. A48812

Structured octagonal anti-diamond numbers (vertex structure 7). A100187

a(n) = ∑_{k=0..floor(n/3)} binomial(3·n-k+1,n-3·k). A371774

Truncated hex numbers: a(n) = 24·n² + 6·n + 1. A381424