728218298492 has 24 divisors (see below), whose sum is σ = 1344019756800. Its totient is φ = 344285939376.

The previous prime is 728218298477. The next prime is 728218298557. The reversal of 728218298492 is 294892812827.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9120692 + ... + 9200187.

It is an arithmetic number, because the mean of its divisors is an integer number (56000823200).

Almost surely, 2^728218298492 is an apocalyptic number.

It is an amenable number.

728218298492 is a deficient number, since it is larger than the sum of its proper divisors (615801458308).

728218298492 is a wasteful number, since it uses less digits than its factorization.

728218298492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18321425 (or 18321423 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 62.

The spelling of 728218298492 in words is "seven hundred twenty-eight billion, two hundred eighteen million, two hundred ninety-eight thousand, four hundred ninety-two".