Properties of the Number 72006

Seventy-Two Thousand Six

Basics

Value: 72005 → 72006 → 72007

Parity: even

Prime: No

Previous Prime: 71999

Next Prime: 72019

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 11 × 1091

Divisors: 1, 2, 3, 6, 11, 22, 33, 66, 1091, 2182

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001100101000110

Octal: 214506

Duodecimal: 35806

Hexadecimal: 11946

Square: 5184864036

Square Root: 268.33933740694823

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

Numbers k such that φ(k) | sigma₁₈(k). A94470

Areas of integer Heronian triangles [prime(A068964(n)), prime(A068964(n)+1), A068965(n)]. A68966

Total sum of parts of multiplicity 2 in all partitions of n. A117525

Integer area of integer-sided triangle such that two sides are twin primes. A257049

Number of terms in InversePhi set of prime(n)*(prime(n)-1) = φ(p(n)²), where prime(n) is the n-th prime and φ=A000010. A72006

Even side of integer-sided triangle such that the area is an integer and two sides are twin primes. A257547