729652878 has 24 divisors (see below), whose sum is σ = 1588012608. Its totient is φ = 242125632.

The previous prime is 729652843. The next prime is 729652879. The reversal of 729652878 is 878256927.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729652879) 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 11 ways as a sum of consecutive naturals, for example, 86875 + ... + 94902.

It is an arithmetic number, because the mean of its divisors is an integer number (66167192).

Almost surely, 2^729652878 is an apocalyptic number.

729652878 is an abundant number, since it is smaller than the sum of its proper divisors (858359730).

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

729652878 is a wasteful number, since it uses less digits than its factorization.

729652878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182008 (or 182005 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 729652878 is about 27012.0876275789. The cubic root of 729652878 is about 900.2685939076.

The spelling of 729652878 in words is "seven hundred twenty-nine million, six hundred fifty-two thousand, eight hundred seventy-eight".