Properties of the Number 78028

Seventy-Eight Thousand Twenty-Eight

Basics

Value: 78027 → 78028 → 78029

Parity: even

Prime: No

Previous Prime: 78017

Next Prime: 78031

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 19507

Divisors: 1, 2, 4, 19507, 39014, 78028

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011000011001100

Octal: 230314

Duodecimal: 391A4

Hexadecimal: 130cc

Square: 6088368784

Square Root: 279.3349244186985

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

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..2 introduced in row major order. A231302

Number of (n+1)X(4+1) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..2 introduced in row major order. A231298

Number of (n+1)X(6+1) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..2 introduced in row major order. A231300

Expansion of (1-x)/(1-x²+2·x³). A78028

Sophie Germain primes which are Brazilian. A306845

The smallest deficient number that begins a run of at least n consecutive deficient numbers with the same number of prime factors (counted with multiplicity). A377353

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