Properties of the Number 29891

Twenty-Nine Thousand Eight Hundred Ninety-One

Basics

Value: 29890 → 29891 → 29892

Parity: odd

Prime: No

Previous Prime: 29881

Next Prime: 29917

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 71 × 421

Divisors: 1, 71, 421, 29891

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010011000011

Octal: 72303

Duodecimal: 1536B

Hexadecimal: 74c3

Square: 893471881

Square Root: 172.89013852733186

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

Centered tetrahedral numbers. A5894

a(0) = 1; for n > 0, a(n) = 41·n² + 2. A206399

Pseudoprimes to base 7. A5938

Strong pseudoprimes to base 7. A20233

Euler pseudoprimes to base 7: composite integers such that abs(7^{(n - 1}/2)) == 1 mod n. A262054

Expansion of (1-x-sqrt(1-2x-19x²))/(10x²). A91148

Records in A007535. A98654

Main diagonal of Ludic array A255127 (and A255129): a(n) = A255127(n,n). A255410

Expansion of ∏_k>=2 (1 + x^k)^k. A298598

Strong pseudoprimes to base 27. A20253