728703020 has 24 divisors (see below), whose sum is σ = 1596811104. Its totient is φ = 278807936.

The previous prime is 728702999. The next prime is 728703023. The reversal of 728703020 is 20307827.

It is not an unprimeable number, because it can be changed into a prime (728703023) 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, 791609 + ... + 792528.

It is an arithmetic number, because the mean of its divisors is an integer number (66533796).

Almost surely, 2^728703020 is an apocalyptic number.

It is an amenable number.

728703020 is an abundant number, since it is smaller than the sum of its proper divisors (868108084).

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

728703020 is a wasteful number, since it uses less digits than its factorization.

728703020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584169 (or 1584167 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 728703020 is about 26994.4998101465. The cubic root of 728703020 is about 899.8777694086.

The spelling of 728703020 in words is "seven hundred twenty-eight million, seven hundred three thousand, twenty".