247148728 has 32 divisors (see below), whose sum is σ = 475308000. Its totient is φ = 120440320.

The previous prime is 247148689. The next prime is 247148753. The reversal of 247148728 is 827841742.

247148728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247148728² = 122164987504035968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48108 + ... + 52996.

It is an arithmetic number, because the mean of its divisors is an integer number (14853375).

Almost surely, 2^247148728 is an apocalyptic number.

It is an amenable number.

247148728 is a deficient number, since it is larger than the sum of its proper divisors (228159272).

247148728 is a wasteful number, since it uses less digits than its factorization.

247148728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055 (or 5051 counting only the distinct ones).

The product of its digits is 200704, while the sum is 43.

The square root of 247148728 is about 15720.9646014486. The cubic root of 247148728 is about 627.5564436564.

The spelling of 247148728 in words is "two hundred forty-seven million, one hundred forty-eight thousand, seven hundred twenty-eight".