731492736 has 192 divisors, whose sum is σ = 2195321520. Its totient is φ = 214511616.

The previous prime is 731492719. The next prime is 731492743. The reversal of 731492736 is 637294137.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 2640630 + ... + 2640906.

Almost surely, 2^731492736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731492736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1097660760).

731492736 is an abundant number, since it is smaller than the sum of its proper divisors (1463828784).

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

731492736 is a wasteful number, since it uses less digits than its factorization.

731492736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 318 counting only the distinct ones).

The product of its digits is 190512, while the sum is 42.

The square root of 731492736 is about 27046.1223838095. The cubic root of 731492736 is about 901.0246502766.

The spelling of 731492736 in words is "seven hundred thirty-one million, four hundred ninety-two thousand, seven hundred thirty-six".