Properties of the Number 97720

Ninety-Seven Thousand Seven Hundred Twenty

Basics

Value: 97719 → 97720 → 97721

Parity: even

Prime: No

Previous Prime: 97711

Next Prime: 97729

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ³ × 5 × 7 × 349

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10111110110111000

Octal: 276670

Duodecimal: 48674

Hexadecimal: 17db8

Square: 9549198400

Square Root: 312.6019833590312

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

Irregular table read by rows: T(n,k) is the number of k-gons, k>=3, formed in a square with edge length 1 by straight line segments when connecting the internal edge points that divide the sides into segments with lengths equal to the Farey series of order n to the equivalent points on the opposite side of the square. A359656

a(n) = n! * ∑_k=1..n-1 H(k)*H(n-k) for n>=2, where H(n) is the n-th harmonic number. A193446

Number of possible bidding sequences of length n in contract bridge. A387252

Number of primes that differ from n-th prime in decimal representation by exactly one edit-operation: deletion, insertion, or substitution. A97720