728230393 has 36 divisors (see below), whose sum is σ = 866113024. Its totient is φ = 611146800.

The previous prime is 728230367. The next prime is 728230483. The reversal of 728230393 is 393032827.

It is not a de Polignac number, because 728230393 - 2⁹ = 728229881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728230193) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1984096 + ... + 1984462.

Almost surely, 2^728230393 is an apocalyptic number.

It is an amenable number.

728230393 is a deficient number, since it is larger than the sum of its proper divisors (137882631).

728230393 is a wasteful number, since it uses less digits than its factorization.

728230393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 728230393 is about 26985.7442550692. The cubic root of 728230393 is about 899.6831777843.

It can be divided in two parts, 7282 and 30393, that added together give a triangular number (37675 = T₂₇₄).

The spelling of 728230393 in words is "seven hundred twenty-eight million, two hundred thirty thousand, three hundred ninety-three".