247930 has 8 divisors (see below), whose sum is σ = 446292. Its totient is φ = 99168.

The previous prime is 247913. The next prime is 247939. The reversal of 247930 is 39742.

It can be written as a sum of positive squares in 2 ways, for example, as 233289 + 14641 = 483^2 + 121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×247930² = 122938569800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247895 and 247904.

It is not an unprimeable number, because it can be changed into a prime (247939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12387 + ... + 12406.

2²⁴⁷⁹³⁰ is an apocalyptic number.

247930 is a deficient number, since it is larger than the sum of its proper divisors (198362).

247930 is a wasteful number, since it uses less digits than its factorization.

247930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24800.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 247930 is about 497.9256972682. The cubic root of 247930 is about 62.8217012914.

The spelling of 247930 in words is "two hundred forty-seven thousand, nine hundred thirty".