Properties of the Number 69490

Sixty-Nine Thousand Four Hundred Ninety

Basics

Value: 69489 → 69490 → 69491

Parity: even

Prime: No

Previous Prime: 69481

Next Prime: 69491

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 6949

Divisors: 1, 2, 5, 10, 6949, 13898, 34745, 69490

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000111101110010

Octal: 207562

Duodecimal: 3426A

Hexadecimal: 10f72

Square: 4828860100

Square Root: 263.60955976595386

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 partitions of n in which each even part has odd multiplicity. A130126

Numbers k such that k+1, k+3, k+7 and k+9 are all primes. A125855

a(n) = floor(1/(ζ(4) - ∑_h=1..n 1/h⁴)). A248230

a(n) = ∑_k=0..n (-1)^k * binomial(n+2·k-1,n-k) * Fibonacci(k+1). A390854

Nearest integer to 1/(∑_k>=n 1/k⁴). A83559

Primes > 1000 in which every substring of lengths 2 and 3 are also prime. A69490