729493456 has 10 divisors (see below), whose sum is σ = 1413393602. Its totient is φ = 364746720.

The previous prime is 729493451. The next prime is 729493493. The reversal of 729493456 is 654394927.

It can be written as a sum of positive squares in only one way, i.e., 451137600 + 278355856 = 21240^2 + 16684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729493451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22796655 + ... + 22796686.

Almost surely, 2^729493456 is an apocalyptic number.

It is an amenable number.

729493456 is a deficient number, since it is larger than the sum of its proper divisors (683900146).

729493456 is a wasteful number, since it uses less digits than its factorization.

729493456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45593349 (or 45593343 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 49.

The square root of 729493456 is about 27009.1365282195. The cubic root of 729493456 is about 900.2030225114.

The spelling of 729493456 in words is "seven hundred twenty-nine million, four hundred ninety-three thousand, four hundred fifty-six".