Properties of the Number 87404

Eighty-Seven Thousand Four Hundred Four

Basics

Value: 87403 → 87404 → 87405

Parity: even

Prime: No

Previous Prime: 87403

Next Prime: 87407

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 21851

Divisors: 1, 2, 4, 21851, 43702, 87404

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010101101100

Octal: 252554

Duodecimal: 426B8

Hexadecimal: 1556c

Square: 7639459216

Square Root: 295.6416750054024

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

Number of binary [ n,6 ] codes without 0 columns. A34347

Number of partitions p of n including floor(mean(p)) as a part. A241334

a(1)=1; a(n) = the reversal of (a(n-1) + sfd(a(n-1))), where sfd(n)= sum of factorials of the digits of n. A121103

a(n) = 4·a(n-1) + 5·a(n-2) for n > 1, with a(0) = 2 and a(1) = 4. A87404