731687044 has 12 divisors (see below), whose sum is σ = 1396857168. Its totient is φ = 332585000.

The previous prime is 731687027. The next prime is 731687051. The reversal of 731687044 is 440786137.

It is a junction number, because it is equal to n+sod(n) for n = 731686988 and 731687006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8314582 + ... + 8314669.

It is an arithmetic number, because the mean of its divisors is an integer number (116404764).

Almost surely, 2^731687044 is an apocalyptic number.

It is an amenable number.

731687044 is a deficient number, since it is larger than the sum of its proper divisors (665170124).

731687044 is a wasteful number, since it uses less digits than its factorization.

731687044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16629266 (or 16629264 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 731687044 is about 27049.7143053305. The cubic root of 731687044 is about 901.1044235901.

The spelling of 731687044 in words is "seven hundred thirty-one million, six hundred eighty-seven thousand, forty-four".