724849728 has 56 divisors (see below), whose sum is σ = 1936504128. Its totient is φ = 239264256.

The previous prime is 724849717. The next prime is 724849729. The reversal of 724849728 is 827948427.

It is not an unprimeable number, because it can be changed into a prime (724849729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450 + ... + 38102.

Almost surely, 2^724849728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724849728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968252064).

724849728 is an abundant number, since it is smaller than the sum of its proper divisors (1211654400).

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

724849728 is a wasteful number, since it uses less digits than its factorization.

724849728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36771 (or 36761 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The square root of 724849728 is about 26923.0334100747. The cubic root of 724849728 is about 898.2888177035.

The spelling of 724849728 in words is "seven hundred twenty-four million, eight hundred forty-nine thousand, seven hundred twenty-eight".