Properties of the Number 90972

Ninety Thousand Nine Hundred Seventy-Two

Basics

Value: 90971 → 90972 → 90973

Parity: even

Prime: No

Previous Prime: 90971

Next Prime: 90977

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 7 × 19 ²

Divisors: 1, 2, 3, 4, 6, 7, 9, 12, 14, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110001101011100

Octal: 261534

Duodecimal: 44790

Hexadecimal: 1635c

Square: 8275904784

Square Root: 301.6156494613633

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

Smaller member of each exponential amicable pair. A126165

Triangle read by rows: T(n,k) is the number of sets of noncrossing paths of size k that cover n nodes arranged in a circle with one node paths allowed, 0 <= k <= n. A390894

Integers whose exponential aliquot sequences end in an exponential amicable pair. A127660

a(n) = n*(2·n+1)². A84367

Exponential amicable numbers. A127659

Lesser member of primitive exponential amicable pairs. A323753

a(n) = 324·n² - 804·n + 468 (n>=2). A304619

Number of triadic partitions of the unit square into (2n+1) subrectangles. A322543

Number of unordered quadruples of self-avoiding paths with nodes that cover all vertices of a convex n-gon; one-node paths are allowed. A360276

Composite numbers k+1 such that k*φ(k+1) is a perfect square. A69068