Properties of the Number 490

Four Hundred Ninety

Basics

Value: 489 → 490 → 491

Parity: even

Prime: No

Previous Prime: 487

Next Prime: 491

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 7 ²

Divisors: 1, 2, 5, 7, 10, 14, 35, 49, 70, 98

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101010

Octal: 752

Duodecimal: 34A

Hexadecimal: 1ea

Square: 240100

Square Root: 22.135943621178654

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) is the number of partitions of n (the partition numbers). A41

Primorial base exp-function: digits in primorial base representation of n become the exponents of successive prime factors whose product a(n) is. A276086

Triangle of Narayana numbers T(n,k) = C(n-1,k-1)*C(n,k-1)/k with 1 <= k <= n, read by rows. Also called the Catalan triangle. A1263

Number of partitions of n into even parts. A35363

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 10: a(n) = 10·n. A8592

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

Coefficients of the '3rd-order' mock θ function ψ(q). A53251

Record gaps between primes. A5250