729388912 has 60 divisors (see below), whose sum is σ = 1650462816. Its totient is φ = 311351040.

The previous prime is 729388901. The next prime is 729388937. The reversal of 729388912 is 219883927.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210748 + ... + 214180.

Almost surely, 2^729388912 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 729388912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825231408).

729388912 is an abundant number, since it is smaller than the sum of its proper divisors (921073904).

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

729388912 is a wasteful number, since it uses less digits than its factorization.

729388912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726 (or 3713 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 729388912 is about 27007.2011137770. The cubic root of 729388912 is about 900.1600176381.

The spelling of 729388912 in words is "seven hundred twenty-nine million, three hundred eighty-eight thousand, nine hundred twelve".