Properties of the Number 74847

Seventy-Four Thousand Eight Hundred Forty-Seven

Basics

Value: 74846 → 74847 → 74848

Parity: odd

Prime: No

Previous Prime: 74843

Next Prime: 74857

Digit Sum: 30

Digital Root: 3

Palindrome: Yes

Factorization: 3 × 61 × 409

Divisors: 1, 3, 61, 183, 409, 1227, 24949, 74847

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010010001011111

Octal: 222137

Duodecimal: 37393

Hexadecimal: 1245f

Square: 5602073409

Square Root: 273.5817976401208

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

Beginning with 2, smallest palindrome >= the previous term such that every concatenation is a prime. A88093

a(1) = 3; for n > 1, choose a(n) to be the smallest number such that a(n) > a(n-1) and (a(n)*a(n-1)+1) mod (a(n)+a(n-1)+1) = 0. A64457

Sum of 4-infinitary divisors of n: if n=Product p(i)^r(i) and d=Product p(i)^s(i), each s(i) has a digit a<=b in its 4-ary expansion everywhere that the corresponding r(i) has a digit b, then d is a 4-infinitary-divisor of n. A74847