729328698 has 80 divisors (see below), whose sum is σ = 1878655680. Its totient is φ = 207157824.

The previous prime is 729328693. The next prime is 729328727. The reversal of 729328698 is 896823927.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (729328693) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 201190 + ... + 204782.

It is an arithmetic number, because the mean of its divisors is an integer number (23483196).

Almost surely, 2^729328698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 729328698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939327840).

729328698 is an abundant number, since it is smaller than the sum of its proper divisors (1149326982).

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

729328698 is a wasteful number, since it uses less digits than its factorization.

729328698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793 (or 3784 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 729328698 is about 27006.0863140145. The cubic root of 729328698 is about 900.1352463417.

The spelling of 729328698 in words is "seven hundred twenty-nine million, three hundred twenty-eight thousand, six hundred ninety-eight".