731994 has 16 divisors (see below), whose sum is σ = 1541280. Its totient is φ = 231120.

The previous prime is 731981. The next prime is 731999. The reversal of 731994 is 499137.

It is not an unprimeable number, because it can be changed into a prime (731999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3097 + ... + 3324.

It is an arithmetic number, because the mean of its divisors is an integer number (96330).

2⁷³¹⁹⁹⁴ is an apocalyptic number.

731994 is an abundant number, since it is smaller than the sum of its proper divisors (809286).

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

731994 is a wasteful number, since it uses less digits than its factorization.

731994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6445.

The product of its digits is 6804, while the sum is 33.

The square root of 731994 is about 855.5664790067. The cubic root of 731994 is about 90.1230415862.

The spelling of 731994 in words is "seven hundred thirty-one thousand, nine hundred ninety-four".