71224 has 16 divisors (see below), whose sum is σ = 138600. Its totient is φ = 34272.

The previous prime is 71209. The next prime is 71233. The reversal of 71224 is 42217.

It is a junction number, because it is equal to n+sod(n) for n = 71198 and 71207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79 + ... + 385.

2⁷¹²²⁴ is an apocalyptic number.

It is an amenable number.

71224 is a deficient number, since it is larger than the sum of its proper divisors (67376).

71224 is a wasteful number, since it uses less digits than its factorization.

71224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 338 counting only the distinct ones).

The product of its digits is 112, while the sum is 16.

The square root of 71224 is about 266.8782493947. The cubic root of 71224 is about 41.4516784068.

The spelling of 71224 in words is "seventy-one thousand, two hundred twenty-four", and thus it is an iban number.