247340 has 24 divisors (see below), whose sum is σ = 529200. Its totient is φ = 97088.

The previous prime is 247339. The next prime is 247343. The reversal of 247340 is 43742.

It is a happy number.

247340 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247340² = 122354151200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a d-powerful number, because it can be written as 2⁹ + 4⁶ + 3¹¹ + 7² + 4⁸ + 0 .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (247343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586 + ... + 1734.

It is an arithmetic number, because the mean of its divisors is an integer number (22050).

2²⁴⁷³⁴⁰ is an apocalyptic number.

247340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247340 is an abundant number, since it is smaller than the sum of its proper divisors (281860).

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

247340 is a wasteful number, since it uses less digits than its factorization.

247340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 239 counting only the distinct ones).

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

The square root of 247340 is about 497.3328865056. The cubic root of 247340 is about 62.7718293601.

The spelling of 247340 in words is "two hundred forty-seven thousand, three hundred forty", and thus it is an iban number.