728235270 has 48 divisors (see below), whose sum is σ = 2163900960. Its totient is φ = 166453632.

The previous prime is 728235253. The next prime is 728235293. The reversal of 728235270 is 72532827.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 577335 + ... + 578594.

It is an arithmetic number, because the mean of its divisors is an integer number (45081270).

Almost surely, 2^728235270 is an apocalyptic number.

728235270 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

728235270 is an abundant number, since it is smaller than the sum of its proper divisors (1435665690).

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

728235270 is a wasteful number, since it uses less digits than its factorization.

728235270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155949 (or 1155946 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 728235270 is about 26985.8346174433. The cubic root of 728235270 is about 899.6851861894.

The spelling of 728235270 in words is "seven hundred twenty-eight million, two hundred thirty-five thousand, two hundred seventy".