247648 has 24 divisors (see below), whose sum is σ = 498960. Its totient is φ = 120960.

The previous prime is 247633. The next prime is 247649. The reversal of 247648 is 846742.

247648 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 2×247648² = 122659063808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247649) by changing a digit.

247648 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 in 3 ways as a sum of consecutive naturals, for example, 2218 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (20790).

2²⁴⁷⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

247648 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247648 is a wasteful number, since it uses less digits than its factorization.

247648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 182 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 247648 is about 497.6424419199. The cubic root of 247648 is about 62.7978740811.

The spelling of 247648 in words is "two hundred forty-seven thousand, six hundred forty-eight".