247304 has 16 divisors (see below), whose sum is σ = 488400. Its totient is φ = 117072.

The previous prime is 247301. The next prime is 247309. The reversal of 247304 is 403742.

It is a happy number.

It is a super-2 number, since 2×247304² = 122318536832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247301) by changing a digit.

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, 662 + ... + 965.

It is an arithmetic number, because the mean of its divisors is an integer number (30525).

2²⁴⁷³⁰⁴ is an apocalyptic number.

It is an amenable number.

247304 is a deficient number, since it is larger than the sum of its proper divisors (241096).

247304 is a wasteful number, since it uses less digits than its factorization.

247304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 247304 is about 497.2966921265. The cubic root of 247304 is about 62.7687837610.

The spelling of 247304 in words is "two hundred forty-seven thousand, three hundred four", and thus it is an iban number.