Properties of the Number 78650

Seventy-Eight Thousand Six Hundred Fifty

Basics

Value: 78649 → 78650 → 78651

Parity: even

Prime: No

Previous Prime: 78649

Next Prime: 78653

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 ² × 11 ² × 13

Divisors: 1, 2, 5, 10, 11, 13, 22, 25, 26, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001100111010

Octal: 231472

Duodecimal: 39622

Hexadecimal: 1333a

Square: 6185822500

Square Root: 280.4460732476032

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

Self-inverse permutation of nonnegative integers, A075158-conjugate of blue code: a(n) = 1 + A075157(A193231(A075158(n-1))). A245454

Fixed points of A153212: After a(1) = 1, numbers of the form p_i1ⁱ¹ * p_i2^i2-i1 * p_i3^i3-i2 * ... * p_ik^ik-i_k-1, where p_i's are distinct primes present in the prime factorization of n, with i1 < i2 < i3 < ... < ik, and k = A001221(n) and ik = A061395(n). A242421

Expansion of g.f. A(x) satisfying A(x)⁵ = A( x⁵/(1 - 5·x)⁵ ). A361765

Triangle read by rows: coefficients of second-order hypergeometric-harmonic polynomials. A222061

Numbers k such that k, k + 1 and k + 2 are 3 consecutive Niven (Harshad) numbers that are also divisible by a square. A359839

Expansion of g.f. A(x) satisfying A(x)⁵ = A( x⁵/(1 - 5·x)⁵ ) / (1 - 5·x). A361764

2-A000002(n) where A000002 is the Kolakoski sequence. A78650