728348080 has 20 divisors (see below), whose sum is σ = 1693409472. Its totient is φ = 291339200.

The previous prime is 728348063. The next prime is 728348081. The reversal of 728348080 is 80843827.

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

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (728348081) 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, 4552096 + ... + 4552255.

Almost surely, 2^728348080 is an apocalyptic number.

It is an amenable number.

728348080 is an abundant number, since it is smaller than the sum of its proper divisors (965061392).

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

728348080 is a wasteful number, since it uses less digits than its factorization.

728348080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9104364 (or 9104358 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 728348080 is about 26987.9247071723. The cubic root of 728348080 is about 899.7316401537.

The spelling of 728348080 in words is "seven hundred twenty-eight million, three hundred forty-eight thousand, eighty".