Properties of the Number 428

Four Hundred Twenty-Eight

Basics

Value: 427 → 428 → 429

Parity: even

Prime: No

Previous Prime: 421

Next Prime: 431

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 107

Divisors: 1, 2, 4, 107, 214, 428

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101100

Octal: 654

Duodecimal: 2B8

Hexadecimal: 1ac

Square: 183184

Square Root: 20.688160865577203

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

Dispersion of (3+[n·r]), where r=(golden ratio)=(1+sqrt(5))/2 and [ ]=floor, by antidiagonals. A191426

Numbers which are the product of a prime and the square of a different prime (p² * q). A54753

a(n) = 8·n + 4. A17113

Matula-Goebel numbers of lone-child-avoiding rooted trees. A291636

Numbers n such that n³² + 1 is prime. A6315

Positions of the digit '1' in the decimal expansion of π. A37000

Catalan numbers - 1. A1453

Multiples of 4 containing a 4 in their decimal representation. A121024

Palindromic in base 9. A29955

Continued fraction for ζ(3). A13631