Properties of the Number -23440

Twenty-Three Thousand Four Hundred Forty

Basics

Value: -23441 → -23440 → -23439

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 5 × 293

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101101110010000

Octal: -55620

Duodecimal: -11694

Hexadecimal: -5b90

Square: 549433600

Square Root: 153.1012736720371

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 1/(1 - x⁵ - x⁶ - x⁷ - x⁸ + x¹³). A173924

a(1)=4, a(2)=5, a(n) = 4·a(n-1) + 5·a(n-2). A189744

Number of cyclic subgroups of the group C_n x C_n x C_n x C_n, where C_n is the cyclic group of order n. A280184

Number of integer partitions whose sum of primes of parts equals their sum of parts plus n. A331387

Values that show the slow decrease in the Andrica function Af(k) = sqrt(p(k+1)) - sqrt(p(k)), where p(k) denotes the k-th prime. A84977

Antidiagonal sums of the convolution array A213783. A213760

Differences between adjacent terms of A076467 that correspond to the locations of abc-quality records of A378164. A378165

Expansion of 1/(1 - ∑_k>=2 (1 - floor(2/d(k)))*x^k), where d(k) is the number of divisors (A000005). A280544

32-gonal numbers: a(n) = n*(15·n-14). A360436

Numbers k such that the average of the squares of k consecutive primes starting with 7 is a prime. A359394