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Properties of the Number 19040

Nineteen Thousand Forty

Basics

Value: 19039 → 19040 → 19041

Parity: even

Prime: No

Previous Prime: 19037

Next Prime: 19051

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 5 × 5 × 7 × 17

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 16, 17

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100101001100000

Octal: 45140

Duodecimal: B028

Hexadecimal: 4a60

Square: 362521600

Square Root: 137.9855064852827

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

The first n-fold intrinsically 4-palindromic number (represented in base ten). A171703
The first 3-fold intrinsically n-palindromic number (given in base ten). A171741
a(n) = ∑m=1..n ∑k=1..m prime(k). A14148
Smallest palindromic numbers of length 4 in two bases differing by n. A216843
Even octagonal numbers: a(n) = 4·n*(3·n-1). A14642
Triangle T(n,k) = number of forests of labeled rooted trees of height at most 1, with n labels, k of which are used for root nodes and any root may contain >= 1 labels, n >= 0, 0<=k<=n. A143396
Number of n-step walks on square lattice in the first quadrant which finish at distance n-3 from the x-axis. A5564
10-quantum transitions in systems of N >= 10 spin 1/2 particles, in columns by combination indices. A213352
Numbers k such that the largest unitary divisor of σ(k) that is coprime with A003961(k) is also a unitary divisor of k. A351551
T(n,k)=Number of (n+1)X(k+1) binary arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants. A186902