247128 has 32 divisors (see below), whose sum is σ = 706560. Its totient is φ = 70560.

The previous prime is 247099. The next prime is 247141. The reversal of 247128 is 821742.

247128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247128² = 122144496768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 247098 and 247107.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247128.

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, 568 + ... + 903.

It is an arithmetic number, because the mean of its divisors is an integer number (22080).

2²⁴⁷¹²⁸ is an apocalyptic number.

247128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

247128 is an abundant number, since it is smaller than the sum of its proper divisors (459432).

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

247128 is a wasteful number, since it uses less digits than its factorization.

247128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487 (or 1483 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 247128 is about 497.1197038943. The cubic root of 247128 is about 62.7538899087.

The spelling of 247128 in words is "two hundred forty-seven thousand, one hundred twenty-eight".