Properties of the Number 20630

Twenty Thousand Six Hundred Thirty

Basics

Value: 20629 → 20630 → 20631

Parity: even

Prime: No

Previous Prime: 20627

Next Prime: 20639

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 2063

Divisors: 1, 2, 5, 10, 2063, 4126, 10315, 20630

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000010010110

Octal: 50226

Duodecimal: BB32

Hexadecimal: 5096

Square: 425596900

Square Root: 143.63147287415805

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

Spt function: total number of smallest parts (counted with multiplicity) in all partitions of n. A92269

List of codewords in binary lexicode with Hamming distance 6 written as decimal numbers. A75934

p-INVERT of the Fibonacci numbers (A000045, including 0), where p(S) = 1 - S - S². A289975

Basis for code in A075934. A75935

Antidiagonal sums of the convolution array A213783. A213760

spt(5n+4) where spt(n) = A092269(n). A220485

Number of (1+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 3 6 or 7. A252533

Numbers n such that the sum of the distinct prime factors of prime(n)-1 and prime(n+1)-1 are the same. A259562

Number of totally aperiodic integer partitions of n. A319811

Number of partitions of n into parts not of the form 19k, 19k+8 or 19k-8. Also number of partitions with at most 7 parts of size 1 and differences between parts at distance 8 are greater than 1. A35977