729388782 has 12 divisors (see below), whose sum is σ = 1580342400. Its totient is φ = 243129588.

The previous prime is 729388741. The next prime is 729388783. The reversal of 729388782 is 287883927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729388783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20260782 + ... + 20260817.

It is an arithmetic number, because the mean of its divisors is an integer number (131695200).

Almost surely, 2^729388782 is an apocalyptic number.

729388782 is an abundant number, since it is smaller than the sum of its proper divisors (850953618).

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

729388782 is a wasteful number, since it uses less digits than its factorization.

729388782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40521607 (or 40521604 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 729388782 is about 27007.1987070114. The cubic root of 729388782 is about 900.1599641592.

The spelling of 729388782 in words is "seven hundred twenty-nine million, three hundred eighty-eight thousand, seven hundred eighty-two".