Properties of the Number 30639

Thirty Thousand Six Hundred Thirty-Nine

Basics

Value: 30638 → 30639 → 30640

Parity: odd

Prime: No

Previous Prime: 30637

Next Prime: 30643

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 1459

Divisors: 1, 3, 7, 21, 1459, 4377, 10213, 30639

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111011110101111

Octal: 73657

Duodecimal: 15893

Hexadecimal: 77af

Square: 938748321

Square Root: 175.03999542961603

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

a(n) = minimal positive k such that the concatenation of the binary expansions of n,n+1,...,n+k is divisible by n+k+1, or -1 if no such k exists. A332563

a(n) = 625·n² + 2·n. A158382

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 25. A31703

Number of (n+1)X(2+1) 0..2 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock equal. A237803

Weight distribution of [128,43,32] extended binary primitive BCH (or XBCH) code. A30639