728864412 has 48 divisors (see below), whose sum is σ = 1728371232. Its totient is φ = 239016960.

The previous prime is 728864407. The next prime is 728864413. The reversal of 728864412 is 214468827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728864413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455598 + ... + 457194.

It is an arithmetic number, because the mean of its divisors is an integer number (36007734).

Almost surely, 2^728864412 is an apocalyptic number.

It is an amenable number.

728864412 is an abundant number, since it is smaller than the sum of its proper divisors (999506820).

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

728864412 is a wasteful number, since it uses less digits than its factorization.

728864412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198 (or 2196 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 728864412 is about 26997.4889943491. The cubic root of 728864412 is about 899.9441990095.

The spelling of 728864412 in words is "seven hundred twenty-eight million, eight hundred sixty-four thousand, four hundred twelve".