Properties of the Number 71824

Seventy-One Thousand Eight Hundred Twenty-Four

Basics

Value: 71823 → 71824 → 71825

Parity: even

Prime: No

Previous Prime: 71821

Next Prime: 71837

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 67 ²

Divisors: 1, 2, 4, 8, 16, 67, 134, 268, 536, 1072

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10001100010010000

Octal: 214220

Duodecimal: 35694

Hexadecimal: 11890

Square: 5158686976

Square Root: 268

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 with prime factorization p²*q⁴. A189988

a(n) = (11·n + 4)². A17438

Numbers with 15 divisors. A30633

Squares with initial digit '7'. A45791

Numbers k such that τ(k+1) - τ(k) = 3, where τ(k) = the number of divisors of k (A000005). A230653

Squares whose largest digit is 8. A295018

Perfect squares in A133459; or perfect squares that are the sums of two nonzero pentagonal pyramidal numbers. A136359

Number of minimal total dominating sets in the n-ladder graph. A303072

a(n) = n * (4·n + 3)². A322675

Numbers that are divisible by the square of the sum of the squares of their digits. A379980