728601028 has 24 divisors (see below), whose sum is σ = 1368558072. Its totient is φ = 338171904.

The previous prime is 728601023. The next prime is 728601031. The reversal of 728601028 is 820106827.

728601028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 389746564 + 338854464 = 19742^2 + 18408^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 728600984 and 728601002.

It is not an unprimeable number, because it can be changed into a prime (728601023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68425 + ... + 78352.

It is an arithmetic number, because the mean of its divisors is an integer number (57023253).

Almost surely, 2^728601028 is an apocalyptic number.

It is an amenable number.

728601028 is a deficient number, since it is larger than the sum of its proper divisors (639957044).

728601028 is a wasteful number, since it uses less digits than its factorization.

728601028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146871 (or 146869 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 728601028 is about 26992.6106184637. The cubic root of 728601028 is about 899.8357840304.

The spelling of 728601028 in words is "seven hundred twenty-eight million, six hundred one thousand, twenty-eight".