731248 has 20 divisors (see below), whose sum is σ = 1619440. Its totient is φ = 313344.

The previous prime is 731243. The next prime is 731249. The reversal of 731248 is 842137.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731243) by changing a digit.

731248 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, 3153 + ... + 3376.

It is an arithmetic number, because the mean of its divisors is an integer number (80972).

2⁷³¹²⁴⁸ is an apocalyptic number.

It is an amenable number.

731248 is an abundant number, since it is smaller than the sum of its proper divisors (888192).

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

731248 is a wasteful number, since it uses less digits than its factorization.

731248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544 (or 6538 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 731248 is about 855.1303994129. The cubic root of 731248 is about 90.0924153600.

Subtracting 731248 from its reverse (842137), we obtain a square (110889 = 333²).

It can be divided in two parts, 731 and 248, that added together give a palindrome (979).

The spelling of 731248 in words is "seven hundred thirty-one thousand, two hundred forty-eight".