Properties of the Number 74640

Seventy-Four Thousand Six Hundred Forty

Basics

Value: 74639 → 74640 → 74641

Parity: even

Prime: No

Previous Prime: 74623

Next Prime: 74653

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ⁴ × 3 × 5 × 311

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10010001110010000

Octal: 221620

Duodecimal: 37240

Hexadecimal: 12390

Square: 5571129600

Square Root: 273.20322106446696

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

Triangular array read by rows. T(n,k) = A008277(n,k)*2^k; n >= 1, 1 <= k <= n. A227450

A symmetrical triangle based on Stirling numbers of the second kind :q=2;t(n,m,q)=If[m == 0 Or m == n, 1, If[Floor[n/2] greater than or equal to m, StirlingS2[ n, m]*q^m, StirlingS2[n, n - m]*q^{n - m}]]. A174545

Number of ways to reciprocally link elements of an n X 5 array either to themselves or to exactly one king-move neighbor. A220641

a(n) = A074639(n) mod A000010(n). A74640