247430 has 16 divisors (see below), whose sum is σ = 451440. Its totient is φ = 97632.

The previous prime is 247421. The next prime is 247433. The reversal of 247430 is 34742.

It is a happy number.

247430 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 2×247430² = 122443209800, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247433) by changing a digit.

247430 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 7 ways as a sum of consecutive naturals, for example, 977 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (28215).

2²⁴⁷⁴³⁰ is an apocalyptic number.

247430 is a deficient number, since it is larger than the sum of its proper divisors (204010).

247430 is a wasteful number, since it uses less digits than its factorization.

247430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343.

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

The square root of 247430 is about 497.4233609311. The cubic root of 247430 is about 62.7794420654.

The spelling of 247430 in words is "two hundred forty-seven thousand, four hundred thirty".