Properties of the Number 71994

Seventy-One Thousand Nine Hundred Ninety-Four

Basics

Value: 71993 → 71994 → 71995

Parity: even

Prime: No

Previous Prime: 71993

Next Prime: 71999

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 13 ² × 71

Divisors: 1, 2, 3, 6, 13, 26, 39, 71, 78, 142

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10001100100111010

Octal: 214472

Duodecimal: 357B6

Hexadecimal: 1193a

Square: 5183136036

Square Root: 268.3169767271538

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

Smaller of two consecutive numbers with the same prime signature not occurring earlier. A91405

Intersection of A108027, A108028, A108029 and A108030. A108109

Numbers k such that s(k) = s(k+1) where s(k) is the sum of unitary, squarefree divisors of k, including 1 (A092261). A327875

Numbers k such that k and k+1 both have the prime signature (2,1,1,1) (A189982). A336658

a(n) = ∑_k=1..n A003159(k). A71994