Properties of the Number 396

Three Hundred Ninety-Six

Basics

Value: 395 → 396 → 397

Parity: even

Prime: No

Previous Prime: 389

Next Prime: 397

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 11

Divisors: 1, 2, 3, 4, 6, 9, 11, 12, 18, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110001100

Octal: 614

Duodecimal: 290

Hexadecimal: 18c

Square: 156816

Square Root: 19.8997487421324

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

Refactorable numbers: number of divisors of k divides k. Also known as τ numbers. A33950

Numbers k such that k² + 1 is prime. A5574

Numbers that are the sum of 2 successive primes. A1043

Sum of totient function: a(n) = ∑_k=1..n φ(k), cf. A000010. A2088

Numbers having k prime factors (counted with multiplicity), the largest of which is the k-th prime. A106529

Multiples of 9: a(n) = 9·n. A8591

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

9-gonal (or enneagonal or nonagonal) numbers: a(n) = n*(7·n-5)/2. A1106

Number of order-consecutive partitions of n. A7052

Number of partitions of n into parts 8k or 8k+1. A35441