247144 has 8 divisors (see below), whose sum is σ = 463410. Its totient is φ = 123568.

The previous prime is 247141. The next prime is 247183. The reversal of 247144 is 441742.

247144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 220900 + 26244 = 470^2 + 162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×247144² = 122160313472, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (247141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15439 + ... + 15454.

2²⁴⁷¹⁴⁴ is an apocalyptic number.

It is an amenable number.

247144 is a deficient number, since it is larger than the sum of its proper divisors (216266).

247144 is a wasteful number, since it uses less digits than its factorization.

247144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30899 (or 30895 counting only the distinct ones).

The product of its digits is 896, while the sum is 22.

The square root of 247144 is about 497.1357963374. The cubic root of 247144 is about 62.7552441875.

Adding to 247144 its reverse (441742), we get a palindrome (688886).

The spelling of 247144 in words is "two hundred forty-seven thousand, one hundred forty-four", and thus it is an iban number.