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Properties of the Number 29920

Twenty-Nine Thousand Nine Hundred Twenty

Basics

Value: 29919 → 29920 → 29921

Parity: even

Prime: No

Previous Prime: 29917

Next Prime: 29921

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 5 × 5 × 11 × 17

Divisors: 1, 2, 4, 5, 8, 10, 11, 16, 17, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111010011100000

Octal: 72340

Duodecimal: 15394

Hexadecimal: 74e0

Square: 895206400

Square Root: 172.97398648351722

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

Longest edge a of smallest (measured by the longest edge) primitive Euler bricks (a, b, c, sqrt(a2 + b2), sqrt(b2 + c2), sqrt(a2 + c2) are integers). A31173
Number of n-step self-avoiding walks on a square lattice where no step can be in the same direction as the previous step. A337353
Number of free pure identity multifunctions with one atom and n positions. A317877
Numerators in the expansion of the exponential generating function ((1 + 3·x)/x)*(1 - (1 + 3·x)-2/3). A290597
Row sums of triangle A134480. A134481
Place two n-gons with radii 1 and 2 concentrically, forming an annular area between them. Connect all the vertices with line segments that lie entirely within that area. Then a(n) is the number of regions in that figure. A337700
Number of partitions of n such that no part is a prime divisor of n. A237125
Where the number of divisors d(k) reaches a new record for numbers k whose prime factors are of the form 3·j+2. A326312
Irregular triangle read by rows where T(n,k) is the number of independent sets of size k in the n-hypercube graph. A354802
a(n) = 4*(4 + 9·n2 + 15·n). A144449