247028 has 6 divisors (see below), whose sum is σ = 432306. Its totient is φ = 123512.

The previous prime is 247007. The next prime is 247031. The reversal of 247028 is 820742.

It can be written as a sum of positive squares in only one way, i.e., 169744 + 77284 = 412^2 + 278^2 .

It is a super-2 number, since 2×247028² = 122045665568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 246994 and 247012.

It is a congruent number.

It is an unprimeable number.

247028 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 as a sum of consecutive naturals, namely, 30875 + ... + 30882.

It is an arithmetic number, because the mean of its divisors is an integer number (72051).

2²⁴⁷⁰²⁸ is an apocalyptic number.

It is an amenable number.

247028 is a deficient number, since it is larger than the sum of its proper divisors (185278).

247028 is a wasteful number, since it uses less digits than its factorization.

247028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61761 (or 61759 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 247028 is about 497.0191143206. The cubic root of 247028 is about 62.7454243422.

The spelling of 247028 in words is "two hundred forty-seven thousand, twenty-eight".