728004080 has 20 divisors (see below), whose sum is σ = 1692609672. Its totient is φ = 291201600.

The previous prime is 728004059. The next prime is 728004083. The reversal of 728004080 is 80400827.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728004083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4549946 + ... + 4550105.

Almost surely, 2^728004080 is an apocalyptic number.

It is an amenable number.

728004080 is an abundant number, since it is smaller than the sum of its proper divisors (964605592).

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

728004080 is a wasteful number, since it uses less digits than its factorization.

728004080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9100064 (or 9100058 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 728004080 is about 26981.5507337884. The cubic root of 728004080 is about 899.5899696015.

The spelling of 728004080 in words is "seven hundred twenty-eight million, four thousand, eighty".