731088 has 30 divisors (see below), whose sum is σ = 2046434. Its totient is φ = 243648.

The previous prime is 731057. The next prime is 731113. The reversal of 731088 is 880137.

731088 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., 725904 + 5184 = 852^2 + 72^2 .

It is a congruent number.

It is an unprimeable number.

731088 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 5 ways as a sum of consecutive naturals, for example, 2395 + ... + 2682.

2⁷³¹⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

731088 is an abundant number, since it is smaller than the sum of its proper divisors (1315346).

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

731088 is a wasteful number, since it uses less digits than its factorization.

731088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091 (or 5082 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 731088 is about 855.0368413115. The cubic root of 731088 is about 90.0858440199.

The spelling of 731088 in words is "seven hundred thirty-one thousand, eighty-eight".