728325518 has 16 divisors (see below), whose sum is σ = 1154155920. Its totient is φ = 343745856.

The previous prime is 728325511. The next prime is 728325527. The reversal of 728325518 is 815523827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728325511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24071 + ... + 45122.

It is an arithmetic number, because the mean of its divisors is an integer number (72134745).

Almost surely, 2^728325518 is an apocalyptic number.

728325518 is a deficient number, since it is larger than the sum of its proper divisors (425830402).

728325518 is a wasteful number, since it uses less digits than its factorization.

728325518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69491.

The product of its digits is 134400, while the sum is 41.

The square root of 728325518 is about 26987.5067021761. The cubic root of 728325518 is about 899.7223497446.

The spelling of 728325518 in words is "seven hundred twenty-eight million, three hundred twenty-five thousand, five hundred eighteen".