729942864 has 80 divisors (see below), whose sum is σ = 2224619520. Its totient is φ = 201824640.

The previous prime is 729942839. The next prime is 729942869. The reversal of 729942864 is 468249927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729942869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24624 + ... + 45455.

It is an arithmetic number, because the mean of its divisors is an integer number (27807744).

Almost surely, 2^729942864 is an apocalyptic number.

It is an amenable number.

729942864 is an abundant number, since it is smaller than the sum of its proper divisors (1494676656).

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

729942864 is a wasteful number, since it uses less digits than its factorization.

729942864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70128 (or 70122 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 729942864 is about 27017.4548024051. The cubic root of 729942864 is about 900.3878427170.

The spelling of 729942864 in words is "seven hundred twenty-nine million, nine hundred forty-two thousand, eight hundred sixty-four".