Properties of the Number 20365

Twenty Thousand Three Hundred Sixty-Five

Basics

Value: 20364 → 20365 → 20366

Parity: odd

Prime: No

Previous Prime: 20359

Next Prime: 20369

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 4073

Divisors: 1, 5, 4073, 20365

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111110001101

Octal: 47615

Duodecimal: B951

Hexadecimal: 4f8d

Square: 414733225

Square Root: 142.70599146496969

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 log-concave compositions (ordered partitions) of n. A69916

Numbers k such that A119682(k) is prime. A136682

Number of ways to design a set of three n-sided dice (using nonnegative integers) such that summing the faces can give any integer from 0 to n³ - 1. A131514

a(n) = ∑_{1 <= x₁ <= x₂ <= x₃ <= x₄ <= x₅ <= n} gcd(x₁, x₂, x₃ , x₄, x₅, n). A343519

Numbers k such that (16·10^k-1 - 61)/9 is a plateau prime. A82701

Indices of prime numbers in A014259. A101761

Convolutory inverse of the Thue Morse sequence. A225132

a(n) = A005259(n) mod (n+1)³. A289289

a(n) = sum of the first n primes whose distance to next prime is 4. A360226

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 0), (-1, 0, 1), (1, 0, -1), (1, 1, 1)}. A149635