731944 has 8 divisors (see below), whose sum is σ = 1372410. Its totient is φ = 365968.

The previous prime is 731933. The next prime is 731957. The reversal of 731944 is 449137.

It can be written as a sum of positive squares in only one way, i.e., 407044 + 324900 = 638^2 + 570^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45739 + ... + 45754.

2⁷³¹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

731944 is a deficient number, since it is larger than the sum of its proper divisors (640466).

731944 is a wasteful number, since it uses less digits than its factorization.

731944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91499 (or 91495 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 731944 is about 855.5372581016. The cubic root of 731944 is about 90.1209895408.

The spelling of 731944 in words is "seven hundred thirty-one thousand, nine hundred forty-four".