Properties of the Number 378

Three Hundred Seventy-Eight

Basics

Value: 377 → 378 → 379

Parity: even

Prime: No

Previous Prime: 373

Next Prime: 379

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 7

Divisors: 1, 2, 3, 6, 7, 9, 14, 18, 21, 27

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101111010

Octal: 572

Duodecimal: 276

Hexadecimal: 17a

Square: 142884

Square Root: 19.44222209522358

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

Triangular numbers: a(n) = binomial(n+1,2) = n*(n+1)/2 = 0 + 1 + 2 + ... + n. A217

Number of compositions of n such that no two adjacent parts are equal (these are sometimes called Carlitz compositions). A3242

Hexagonal numbers: a(n) = n*(2·n-1). A384

Triangle of coefficients of polynomials u(n,x) jointly generated with A029653; see the Formula section. A208510

Triangle T(n,k) 0<=k<n : Number of compositions of n with k adjacent equal parts. A106356

Self numbers or Colombian numbers (numbers that are not of the form m + sum of digits of m for any m). A3052

Multiples of 9: a(n) = 9·n. A8591

Numbers that are products of 5 primes (or 5-almost primes, a generalization of semiprimes). A14614

Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity). A6753

Numbers that are the sum of 3 positive cubes. A3072