Properties of the Number 16623

Sixteen Thousand Six Hundred Twenty-Three

Basics

Value: 16622 → 16623 → 16624

Parity: odd

Prime: No

Previous Prime: 16619

Next Prime: 16631

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 1847

Divisors: 1, 3, 9, 1847, 5541, 16623

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100000011101111

Octal: 40357

Duodecimal: 9753

Hexadecimal: 40ef

Square: 276324129

Square Root: 128.93021368166578

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

Expansion of e.g.f. 1 / (1 - x·cos(x)). A352252

Number of partitions of n containing a clique of size 10. A183567

The smallest position with nim-value n in subtract-a-square game. A297963

Numbers generated by recursive procedure a(n) = nozero(a(n-1) * 3), in which the function nozero(x) removes all zeros from x, starting with a(1) = 1. A243845

Number of n-digit primes whose digits are all primes. A135944

Smallest of three consecutive integers divisible respectively by three consecutive squares greater than 1. A178919

Number of 3 X 3 matrices with unit determinant and positive integer entries whose sum is n. A361082

a(n) = (n-2)*a(n-1) - (n-1)*a(n-2), with a(0)=1, a(1)=1. A122092

Pierce expansion of the cube root of 1/2. A140076

Number of (3+2) X (n+2) 0..4 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order. A252964