Properties of the Number 748

Seven Hundred Forty-Eight

Basics

Value: 747 → 748 → 749

Parity: even

Prime: No

Previous Prime: 743

Next Prime: 751

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 11 × 17

Divisors: 1, 2, 4, 11, 17, 22, 34, 44, 68, 187

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011101100

Octal: 1354

Duodecimal: 524

Hexadecimal: 2ec

Square: 559504

Square Root: 27.349588662354687

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

Generalized heptagonal numbers: m*(5·m - 3)/2, m = 0, +-1, +-2 +-3, ... A85787

Primitive abundant numbers: abundant numbers (A005101) having no abundant proper divisor. A91191

Primitive abundant numbers (abundant numbers all of whose proper divisors are deficient numbers). A71395

a(1) = 0; and for n > 1, a(n) = A033879(A156552(n)). A323244

Primitive nondeficient numbers. A6039

Second heptagonal numbers: a(n) = n*(5·n+3)/2. A147875

Numbers whose sum of digits is 19. A166459

Numbers n whose abundance is 16. A141547

Number of configurations of the sliding block 8-puzzle that require a minimum of n moves to be reached, starting with the empty square in one of the corners. A89473

Generalized 23-gonal (or icositrigonal) numbers: m*(21·m - 19)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303303