Properties of the Number 40388

Forty Thousand Three Hundred Eighty-Eight

Basics

Value: 40387 → 40388 → 40389

Parity: even

Prime: No

Previous Prime: 40387

Next Prime: 40423

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 23 × 439

Divisors: 1, 2, 4, 23, 46, 92, 439, 878, 1756, 10097

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1001110111000100

Octal: 116704

Duodecimal: 1B458

Hexadecimal: 9dc4

Square: 1631190544

Square Root: 200.96765908971523

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

Reversion of partitions into distinct parts A000009. A50393

Triangle read by rows: T(n,k) (n >= 1, 3 <= k <= n+2) = number of k-sided cells in the n-th figure shown in A255011 (meaning the figure with 4n points on the perimeter). A334699

Number of n X 2 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4. A197642

Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4. A239853

Continued fraction for sqrt(409). A40388