247330 has 8 divisors (see below), whose sum is σ = 445212. Its totient is φ = 98928.

The previous prime is 247309. The next prime is 247337. The reversal of 247330 is 33742.

It can be written as a sum of positive squares in 2 ways, for example, as 218089 + 29241 = 467^2 + 171^2 .

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

It is a super-2 number, since 2×247330² = 122344257800, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 247298 and 247307.

It is not an unprimeable number, because it can be changed into a prime (247337) by changing a digit.

247330 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 3 ways as a sum of consecutive naturals, for example, 12357 + ... + 12376.

2²⁴⁷³³⁰ is an apocalyptic number.

247330 is a deficient number, since it is larger than the sum of its proper divisors (197882).

247330 is a wasteful number, since it uses less digits than its factorization.

247330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24740.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 247330 is about 497.3228327757. The cubic root of 247330 is about 62.7709833900.

The spelling of 247330 in words is "two hundred forty-seven thousand, three hundred thirty".