Properties of the Number 78972

Seventy-Eight Thousand Nine Hundred Seventy-Two

Basics

Value: 78971 → 78972 → 78973

Parity: even

Prime: No

Previous Prime: 78941

Next Prime: 78977

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 6581

Divisors: 1, 2, 3, 4, 6, 12, 6581, 13162, 19743, 26324

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011010001111100

Octal: 232174

Duodecimal: 39850

Hexadecimal: 1347c

Square: 6236576784

Square Root: 281.0195722721106

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

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A384622. A384623

Expansion of 1 / ((1-x)³ - x²)². A392581

Brilliant numbers: semiprimes (products of two primes, A001358) whose prime factors have the same number of decimal digits. A78972

G.f. A(x) satisfies A(x) = (1 + x·A(x))² * (1 + A(x)) / 2. A228966