Properties of the Number 30487

Thirty Thousand Four Hundred Eighty-Seven

Basics

Value: 30486 → 30487 → 30488

Parity: odd

Prime: No

Previous Prime: 30469

Next Prime: 30491

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 43 × 709

Divisors: 1, 43, 709, 30487

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111011100010111

Octal: 73427

Duodecimal: 15787

Hexadecimal: 7717

Square: 929457169

Square Root: 174.6052691072065

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

Triangle T(n, k, j) = T(n-1, k, j) + T(n-1, k-1, j) + (2·j + 1)*prime(j)*T(n-2, k-1, j) with T(2, k, j) = prime(j) and j = 10, read by rows. A153655

Number of ordered triples (w,x,y) with all terms in {1,...,n} and w³ < x³ + y³. A211650

Fibonacci sequence beginning 5, 16. A22140

a(n) = start of a sequence of at least n consecutive primes, p₁, p₂, ..., p_n (say), all == 1 mod 4, such that A(p₁) > A(p₂) > ... > A(p_n), where A(p) (see A145010) is the area of the Pythagorean triangle with hypotenuse p. A144954

Smallest odd k > 1 such that k·2ⁿ+1 is a prime number. A247479

When squared gives number composed of digits {2, 5, 7}. A30487

Number of (n+1)X(1+1) 0..3 arrays colored with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock. A236199