728703486 has 64 divisors (see below), whose sum is σ = 1869096960. Its totient is φ = 206128800.

The previous prime is 728703467. The next prime is 728703497. The reversal of 728703486 is 684307827.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28635 + ... + 47721.

It is an arithmetic number, because the mean of its divisors is an integer number (29204640).

Almost surely, 2^728703486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 728703486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (934548480).

728703486 is an abundant number, since it is smaller than the sum of its proper divisors (1140393474).

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

728703486 is a wasteful number, since it uses less digits than its factorization.

728703486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19206 (or 19200 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 728703486 is about 26994.5084415331. The cubic root of 728703486 is about 899.8779612302.

The spelling of 728703486 in words is "seven hundred twenty-eight million, seven hundred three thousand, four hundred eighty-six".