247293 has 20 divisors (see below), whose sum is σ = 383328. Its totient is φ = 158760.

The previous prime is 247279. The next prime is 247301. The reversal of 247293 is 392742.

It is not a de Polignac number, because 247293 - 2⁶ = 247229 is a prime.

It is a super-2 number, since 2×247293² = 122307655698, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (3024) is a multiple of the sum of its prime factors (126).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3448 + ... + 3518.

2²⁴⁷²⁹³ is an apocalyptic number.

It is an amenable number.

247293 is a deficient number, since it is larger than the sum of its proper divisors (136035).

247293 is an equidigital number, since it uses as much as digits as its factorization.

247293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 117 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 247293 is about 497.2856322075. The cubic root of 247293 is about 62.7678531022.

The spelling of 247293 in words is "two hundred forty-seven thousand, two hundred ninety-three".