731712 has 56 divisors (see below), whose sum is σ = 2007616. Its totient is φ = 235008.

The previous prime is 731711. The next prime is 731713. The reversal of 731712 is 217137.

It is an interprime number because it is at equal distance from previous prime (731711) and next prime (731713).

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 731712.

It is not an unprimeable number, because it can be changed into a prime (731711) 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 7 ways as a sum of consecutive naturals, for example, 7053 + ... + 7155.

2⁷³¹⁷¹² 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 731712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003808).

731712 is an abundant number, since it is smaller than the sum of its proper divisors (1275904).

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

731712 is a wasteful number, since it uses less digits than its factorization.

731712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 145 counting only the distinct ones).

The product of its digits is 294, while the sum is 21.

The square root of 731712 is about 855.4016600405. The cubic root of 731712 is about 90.1114668273. Note that the first 3 decimals are identical.

Adding to 731712 its reverse (217137), we get a palindrome (948849).

The spelling of 731712 in words is "seven hundred thirty-one thousand, seven hundred twelve".