729376218 has 64 divisors (see below), whose sum is σ = 1718928000. Its totient is φ = 228604032.

The previous prime is 729376213. The next prime is 729376289. The reversal of 729376218 is 812673927.

It is not an unprimeable number, because it can be changed into a prime (729376213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137968 + ... + 143156.

It is an arithmetic number, because the mean of its divisors is an integer number (26858250).

Almost surely, 2^729376218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 729376218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859464000).

729376218 is an abundant number, since it is smaller than the sum of its proper divisors (989551782).

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

729376218 is a wasteful number, since it uses less digits than its factorization.

729376218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356 (or 5350 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 729376218 is about 27006.9661013598. The cubic root of 729376218 is about 900.1547955966.

The spelling of 729376218 in words is "seven hundred twenty-nine million, three hundred seventy-six thousand, two hundred eighteen".