728486438 has 8 divisors (see below), whose sum is σ = 1130410080. Its totient is φ = 351683080.

The previous prime is 728486419. The next prime is 728486441. The reversal of 728486438 is 834684827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6279998 + ... + 6280113.

It is an arithmetic number, because the mean of its divisors is an integer number (141301260).

Almost surely, 2^728486438 is an apocalyptic number.

728486438 is a deficient number, since it is larger than the sum of its proper divisors (401923642).

728486438 is a wasteful number, since it uses less digits than its factorization.

728486438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12560142.

The product of its digits is 2064384, while the sum is 50.

The square root of 728486438 is about 26990.4879170422. The cubic root of 728486438 is about 899.7886079653.

The spelling of 728486438 in words is "seven hundred twenty-eight million, four hundred eighty-six thousand, four hundred thirty-eight".