Properties of the Number 1406

One Thousand Four Hundred Six

Basics

Value: 1405 → 1406 → 1407

Parity: even

Prime: No

Previous Prime: 1399

Next Prime: 1409

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 × 19 × 37

Divisors: 1, 2, 19, 37, 38, 74, 703, 1406

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10101111110

Octal: 2576

Duodecimal: 992

Hexadecimal: 57e

Square: 1976836

Square Root: 37.49666651850535

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

Oblong (or promic, pronic, or heteromecic) numbers: a(n) = n*(n+1). A2378

a(n) = 2·n*(2·n-1). A2939

a(n) = n*σ(n). A64987

Number of integer partitions of n that are empty, (1), or have at least two parts and these parts are pairwise coprime. A327516

Expansion of g.f.: (1+x)/(1-37·x). A170757

a(n) = 2*(n² - n + 1). A51890

Semi-meanders: number of ways a semi-infinite directed curve can cross a straight line n times. A682

Greatest number of multisets that can be obtained by choosing a divisor of each part of an integer partition of n. A370808

a(n) = 1 + ∑_i=1..n (n-i+1)*φ(i). A5598

Rectangular array neg(i,j,1,2) read by descending antidiagonals: pos() and neg() denote the positive part and negative part of a determinant; see Comments. A380661