Properties of the Number 74405

Seventy-Four Thousand Four Hundred Five

Basics

Value: 74404 → 74405 → 74406

Parity: odd

Prime: No

Previous Prime: 74383

Next Prime: 74411

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 23 × 647

Divisors: 1, 5, 23, 115, 647, 3235, 14881, 74405

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10010001010100101

Octal: 221245

Duodecimal: 37085

Hexadecimal: 122a5

Square: 5536104025

Square Root: 272.7727992304218

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

Triangle T₄(n, m), the number of surjective multi-valued functions from {1, 1, 1, 1, 2, 3, ..., n-3} to {1, 2, 3, ..., m} by rows (n >= 1, 1 <= m <= n). A172108

a(n) = number of (s(0), s(1), ..., s(n)) such that every s(i) is an integer, s(0) = 0, |s(i) - s(i-1)| = 1 for i = 1,2; |s(i) - s(i-1)| <= 1 for i >= 3, s(n) = 2. Also a(n) = T(n,n-2), where T is the array defined in A024996. A26069

Number of loopless rooted planar maps with 4 faces and n vertices and no isthmuses. A6417

Strong pseudoprimes to base 96. A20322

Strong pseudoprimes to base 99. A20325

Number of nX2 1..3 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order. A166776

Number of 4-ary Lyndon words of length n over Z₄ with trace 0 and subtrace 3. A74405

Unitary arithmetic numbers k (A103826) such that usigma(k)/ud(k) is also a unitary arithmetic number, where ud(k) is the number of divisors of k (A034444) and usigma(k) is their sum (A034448). A334815