247938 has 24 divisors (see below), whose sum is σ = 524304. Its totient is φ = 78120.

The previous prime is 247913. The next prime is 247939. The reversal of 247938 is 839742.

247938 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247938² = 122946503688, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 247899 and 247908.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247938.

It is not an unprimeable number, because it can be changed into a prime (247939) 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 11 ways as a sum of consecutive naturals, for example, 5745 + ... + 5787.

It is an arithmetic number, because the mean of its divisors is an integer number (21846).

2²⁴⁷⁹³⁸ is an apocalyptic number.

247938 is an abundant number, since it is smaller than the sum of its proper divisors (276366).

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

247938 is a wasteful number, since it uses less digits than its factorization.

247938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 79 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 247938 is about 497.9337305305. The cubic root of 247938 is about 62.8223769770.

The spelling of 247938 in words is "two hundred forty-seven thousand, nine hundred thirty-eight".