731396 has 12 divisors (see below), whose sum is σ = 1295952. Its totient is φ = 361128.

The previous prime is 731389. The next prime is 731413. The reversal of 731396 is 693137.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 731396.

It is an unprimeable number.

731396 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 770 + ... + 1433.

It is an arithmetic number, because the mean of its divisors is an integer number (107996).

2⁷³¹³⁹⁶ is an apocalyptic number.

It is an amenable number.

731396 is a deficient number, since it is larger than the sum of its proper divisors (564556).

731396 is a wasteful number, since it uses less digits than its factorization.

731396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290 (or 2288 counting only the distinct ones).

The product of its digits is 3402, while the sum is 29.

The square root of 731396 is about 855.2169315443. The cubic root of 731396 is about 90.0984929963.

It can be divided in two parts, 73139 and 6, that multiplied together give a palindrome (438834).

The spelling of 731396 in words is "seven hundred thirty-one thousand, three hundred ninety-six".