Properties of the Number 21014

Twenty-One Thousand Fourteen

Basics

Value: 21013 → 21014 → 21015

Parity: even

Prime: No

Previous Prime: 21013

Next Prime: 21017

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 19 × 79

Divisors: 1, 2, 7, 14, 19, 38, 79, 133, 158, 266

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101001000010110

Octal: 51026

Duodecimal: 101B2

Hexadecimal: 5216

Square: 441588196

Square Root: 144.96206400296597

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

Numbers that are the sum of 5 positive 7th powers. A3372

Total number of congruence subgroups of PSL(2,Z) of genus n. A258691

Numbers that are both a sum and a difference of two positive cubes. A225908

Sum of two (possibly negative) coprime cubes in at least 2 ways, but not the sum of 2 noncoprime cubes. A293648

Positive numbers that are the sum of two (possibly negative) cubes in at least 2 ways (primitive solutions). A293647

Number of partitions of n such that (maximal multiplicity of parts) = (multiplicity of the least part). A240303

a(n) = n³-((n-1)³+(n-2)³+(n-3)³). A147974

Sums of two successive primes s such that s+-3 are primes. A179485

Triangle read by rows: T(n,k) is the number of hill-free Schroeder paths of length 2n that have k weak ascents (1<=k<=n-1 for n>=2; k=1 for n=1). A Schroeder path of length 2n is a lattice path from (0,0) to (2n,0) consisting of U=(1,1), D=(1,-1) and H=(2,0) steps and never going below the x-axis. A hill is a peak at height 1. A weak ascent in a Schroeder path is a maximal sequence of consecutive U and H steps. A114691

(prime(n))³-(nonprime(n))³ . A163121