Properties of the Number 340

Three Hundred Forty

Basics

Value: 339 → 340 → 341

Parity: even

Prime: No

Previous Prime: 337

Next Prime: 347

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 17

Divisors: 1, 2, 4, 5, 10, 17, 20, 34, 68, 85

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101010100

Octal: 524

Duodecimal: 244

Hexadecimal: 154

Square: 115600

Square Root: 18.439088914585774

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

Expansion of ∏_{m >= 1} (1 + x^m); number of partitions of n into distinct parts; number of partitions of n into odd parts. A9

Moser-de Bruijn sequence: sums of distinct powers of 4. A695

Numbers k such that k² + 1 is prime. A5574

Numbers that are the sum of 2 successive primes. A1043

Numbers that are products of 4 primes. A14613

Numbers k such that k! + 1 is prime. A2981

Multiples of 10: a(n) = 10·n. A8592

Triangle read by rows: T(n,m) (n >= m >= 1) = number of regions (or cells) formed by drawing the line segments connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares. A331452

Number of partitions of n whose mean is a part. A237984

Number of points on surface of tetrahedron; coordination sequence for sodalite net (equals 2·n²+2 for n > 0). A5893