247830 has 32 divisors (see below), whose sum is σ = 649728. Its totient is φ = 60000.

The previous prime is 247829. The next prime is 247847. The reversal of 247830 is 38742.

It is a super-2 number, since 2×247830² = 122839417800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46 + ... + 705.

It is an arithmetic number, because the mean of its divisors is an integer number (20304).

2²⁴⁷⁸³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324864).

247830 is an abundant number, since it is smaller than the sum of its proper divisors (401898).

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

247830 is a wasteful number, since it uses less digits than its factorization.

247830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 247830 is about 497.8252705518. The cubic root of 247830 is about 62.8132539946.

The spelling of 247830 in words is "two hundred forty-seven thousand, eight hundred thirty".