Properties of the Number 16428

Sixteen Thousand Four Hundred Twenty-Eight

Basics

Value: 16427 → 16428 → 16429

Parity: even

Prime: No

Previous Prime: 16427

Next Prime: 16433

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 37 ²

Divisors: 1, 2, 3, 4, 6, 12, 37, 74, 111, 148

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100000000101100

Octal: 40054

Duodecimal: 9610

Hexadecimal: 402c

Square: 269879184

Square Root: 128.17175976009693

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

a(n) = 12·n². A135453

Number of ways to place 4 nonattacking bishops on an n X n board. A172127

T(n,k)=Number of nXk integer arrays with each element equal to the number of horizontal and antidiagonal neighbors exactly one smaller than itself. A266101

T(n,k)=Number of nXk 0..2 arrays with every repeated value in every row not one larger and in every column one larger mod 3 than the previous repeated value, and upper left element zero. A268092

The smallest number such that n or more positive numbers k exist such that a(n) - k = sopfr(a(n) + k), where sopfr(m) is the sum of the primes dividing m, with repetition. A369355

Number of points in the standard root system version of the D₃ (or f.c.c.) lattice having L_infinity norm n. A110907

Numbers that are the sum of three squares in arithmetic progression. A292313

Place n points in general position on each side of a square, and join every pair of the 4·n+4 boundary points by a chord; sequence gives number of edges in the resulting planar graph. A367122

Numbers m such that m^k does not divide the denominator of the m-th generalized harmonic number H(m,k) nor the denominator of the n-th alternating generalized harmonic number H'(m,k), for k = 5. A128675

Number of partitions of n² into at most three parts. A274250