Properties of the Number 20270

Twenty Thousand Two Hundred Seventy

Basics

Value: 20269 → 20270 → 20271

Parity: even

Prime: No

Previous Prime: 20269

Next Prime: 20287

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 2027

Divisors: 1, 2, 5, 10, 2027, 4054, 10135, 20270

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111100101110

Octal: 47456

Duodecimal: B892

Hexadecimal: 4f2e

Square: 410872900

Square Root: 142.3727502017152

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

Number of necklace compositions of n with no part circularly followed by a divisor. A328600

Triangle read by rows: T(n,m), n >= 0, 0 <= m <= n, is number of partitions of the set {1,2,...,n} that have at most one block contained in {1,...,m}. A362925

Triangle read by rows: number of labeled partitions of n with maximin m. A113547

Sum over all permutations of [n] of the maximum of the lengths of increasing or decreasing subsequences. A321273

Triangle read by rows: T(n,m), n >= 1, 1 <= m <= n, is number of partitions of the set {1,2,...,n} that have at most one block contained in {1,...,m}. A362924

Number of n-digit numbers N such that the reversal of N divides N. A222811

Number of set partitions of [n] such that for each block all absolute differences between consecutive elements are <= seven. A287279

Distinct compositions of the complete graph on n+2 vertices with one edge removed (K^-_{n+2}). A78468

Sum of the differences between the largest part and smallest part over all partitions of n into distinct parts. A117455

Expansion of φ(-q⁶) / φ(-q) in powers of q where φ() is a Ramanujan θ function. A262968