Properties of the Number 78372

Seventy-Eight Thousand Three Hundred Seventy-Two

Basics

Value: 78371 → 78372 → 78373

Parity: even

Prime: No

Previous Prime: 78367

Next Prime: 78401

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 7 × 311

Divisors: 1, 2, 3, 4, 6, 7, 9, 12, 14, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001000100100

Octal: 231044

Duodecimal: 39430

Hexadecimal: 13224

Square: 6142170384

Square Root: 279.9499955349169

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) = 100·n² - n. A157659

Expansion of e.g.f. 1/(1 - x·exp(x * (exp(x) - 1))). A362245

a(n) = 784·n² - 28. A158657

a(n) = 400·n² - 2·n. A158316

Number of edge covers of fan graph F_2,n. A380461

Number of squarefree integers in {n, f(n), f(f(n)), ...., 1}, where f is the Collatz function defined by f(x) = x/2 if·is even; f(x) = 3x + 1 if·is odd. A78372