247216 has 10 divisors (see below), whose sum is σ = 479012. Its totient is φ = 123600.

The previous prime is 247201. The next prime is 247223. The reversal of 247216 is 612742.

247216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247216² = 122231501312, which contains 22 as substring.

It is an unprimeable number.

247216 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7710 + ... + 7741.

2²⁴⁷²¹⁶ is an apocalyptic number.

It is an amenable number.

247216 is a deficient number, since it is larger than the sum of its proper divisors (231796).

247216 is a wasteful number, since it uses less digits than its factorization.

247216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15459 (or 15453 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 247216 is about 497.2082058856. The cubic root of 247216 is about 62.7613377185.

Adding to 247216 its reverse (612742), we get a palindrome (859958).

The spelling of 247216 in words is "two hundred forty-seven thousand, two hundred sixteen".