728073212 has 12 divisors (see below), whose sum is σ = 1349076960. Its totient is φ = 342622656.

The previous prime is 728073209. The next prime is 728073221. The reversal of 728073212 is 212370827.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5353412 + ... + 5353547.

It is an arithmetic number, because the mean of its divisors is an integer number (112423080).

Almost surely, 2^728073212 is an apocalyptic number.

It is an amenable number.

728073212 is a deficient number, since it is larger than the sum of its proper divisors (621003748).

728073212 is a wasteful number, since it uses less digits than its factorization.

728073212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10706980 (or 10706978 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 728073212 is about 26982.8318009804. The cubic root of 728073212 is about 899.6184440231.

The spelling of 728073212 in words is "seven hundred twenty-eight million, seventy-three thousand, two hundred twelve".