731268 has 60 divisors (see below), whose sum is σ = 1995532. Its totient is φ = 233280.

The previous prime is 731267. The next prime is 731287. The reversal of 731268 is 862137.

It can be written as a sum of positive squares in 2 ways, for example, as 311364 + 419904 = 558^2 + 648^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11958 + ... + 12018.

2⁷³¹²⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997766).

731268 is an abundant number, since it is smaller than the sum of its proper divisors (1264264).

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

731268 is a wasteful number, since it uses less digits than its factorization.

731268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 103 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 731268 is about 855.1420934558. The cubic root of 731268 is about 90.0932367102.

It can be divided in two parts, 731 and 268, that added together give a palindrome (999).

The spelling of 731268 in words is "seven hundred thirty-one thousand, two hundred sixty-eight".