Properties of the Number 438

Four Hundred Thirty-Eight

Basics

Value: 437 → 438 → 439

Parity: even

Prime: No

Previous Prime: 433

Next Prime: 439

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 73

Divisors: 1, 2, 3, 6, 73, 146, 219, 438

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110110

Octal: 666

Duodecimal: 306

Hexadecimal: 1b6

Square: 191844

Square Root: 20.92844953645635

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

Sphenic numbers: products of 3 distinct primes. A7304

Number of rooted trees with n vertices in which vertices at the same level have the same degree. A3238

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

Increasing sequence generated by these rules: a(1)=1, and if·is in a then 3x-2 and 4x-2 are in a. A191113

Primitive abundant numbers: abundant numbers (A005101) having no abundant proper divisor. A91191

Partial sums of A299287. A299288

Expansion of ∏_m>=1 (1+x^m)^A000009(m). A50342

Partial sums of sequence of odd primes (A065091); a(n) = sum of the first n odd primes. A71148

Admirable numbers. A number n is admirable if there exists a proper divisor d' of n such that σ(n)-2d'=2n, where σ(n) is the sum of all divisors of n. A111592

Number of integer partitions of n whose differences (with the last part taken to be 0) are distinct. A325324