Properties of the Number 98

Ninety-Eight

Basics

Value: 97 → 98 → 99

Parity: even

Prime: No

Previous Prime: 97

Next Prime: 101

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 ²

Divisors: 1, 2, 7, 14, 49, 98

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100010

Octal: 142

Duodecimal: 82

Hexadecimal: 62

Square: 9604

Square Root: 9.899494936611665

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

a(n) = σ(n), the sum of the divisors of n. Also called sigma₁(n). A203

Expansion of ∏_k>=0 (1 + x^2k+1); number of partitions of n into distinct odd parts; number of self-conjugate partitions; number of symmetric Ferrers graphs with n nodes. A700

The nonnegative even numbers: a(n) = 2n. A5843

Primorial base exp-function: digits in primorial base representation of n become the exponents of successive prime factors whose product a(n) is. A276086

Numbers that are not squarefree. Numbers that are divisible by a square greater than 1. The complement of A005117. A13929

a(n) = 6·n² + 2 for n > 0, a(0)=1. A5897

The Doudna sequence: write n-1 in binary; power of prime(k) in a(n) is # of 1's that are followed by k-1 0's. A5940

Lower Wythoff sequence (a Beatty sequence): a(n) = floor(n*φ), where φ = (1+sqrt(5))/2 = A001622. A201

Odious numbers: numbers with an odd number of 1's in their binary expansion. A69

Numbers that are the product of exactly three (not necessarily distinct) primes. A14612

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