Properties of the Number 28404

Twenty-Eight Thousand Four Hundred Four

Basics

Value: 28403 → 28404 → 28405

Parity: even

Prime: No

Previous Prime: 28403

Next Prime: 28409

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ³ × 263

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110111011110100

Octal: 67364

Duodecimal: 14530

Hexadecimal: 6ef4

Square: 806787216

Square Root: 168.53486286225768

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 primes less than 10000n. A38813

a(n) = 1·2*3·4*5 - 6·7*8·9*10 + 11·12·13·14·15 - ... + (up to n). A319545

a(n) = (6/n³) * ∑_d∣n moebius(n/d)*binomial(2·d,d). A268592

Fourier coefficients of T₈. A35314

Numbers whose set of base 13 digits is {0,C}, where C base 13 = 12 base 10. A97259

Number of quadrilaterals in a triangular matchstick arrangement of side n. A204185

G.f. satisfies: A(x) = (1 + x·A(x)³)*(1 + x²*A(x)³). A199876

Number of types of Boolean functions of n variables under a certain group. A28404