731072 has 14 divisors (see below), whose sum is σ = 1450848. Its totient is φ = 365504.

The previous prime is 731057. The next prime is 731113. The reversal of 731072 is 270137.

It is a congruent number.

It is an unprimeable number.

731072 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 as a sum of consecutive naturals, namely, 5648 + ... + 5775.

It is an arithmetic number, because the mean of its divisors is an integer number (103632).

2⁷³¹⁰⁷² is an apocalyptic number.

It is an amenable number.

731072 is a deficient number, since it is larger than the sum of its proper divisors (719776).

731072 is a wasteful number, since it uses less digits than its factorization.

731072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11435 (or 11425 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 731072 is about 855.0274849383. The cubic root of 731072 is about 90.0851868332.

The spelling of 731072 in words is "seven hundred thirty-one thousand, seventy-two".