247924 has 6 divisors (see below), whose sum is σ = 433874. Its totient is φ = 123960.

The previous prime is 247913. The next prime is 247939. The reversal of 247924 is 429742.

247924 is nontrivially palindromic in base 15.

247924 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 219024 + 28900 = 468^2 + 170^2 .

It is a super-2 number, since 2×247924² = 122932619552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247892 and 247901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30987 + ... + 30994.

2²⁴⁷⁹²⁴ is an apocalyptic number.

It is an amenable number.

247924 is a deficient number, since it is larger than the sum of its proper divisors (185950).

247924 is a wasteful number, since it uses less digits than its factorization.

247924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61985 (or 61983 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 247924 is about 497.9196722364. The cubic root of 247924 is about 62.8211945177.

The spelling of 247924 in words is "two hundred forty-seven thousand, nine hundred twenty-four".