723527728 has 180 divisors, whose sum is σ = 1861287120. Its totient is φ = 271138560.

The previous prime is 723527719. The next prime is 723527743. The reversal of 723527728 is 827725327.

Its product of digits (329280) is a multiple of the sum of its prime factors (336).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2750925 + ... + 2751187.

It is an arithmetic number, because the mean of its divisors is an integer number (10340484).

Almost surely, 2^723527728 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 723527728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930643560).

723527728 is an abundant number, since it is smaller than the sum of its proper divisors (1137759392).

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

723527728 is a wasteful number, since it uses less digits than its factorization.

723527728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 312 counting only the distinct ones).

The product of its digits is 329280, while the sum is 43.

The square root of 723527728 is about 26898.4707371999. The cubic root of 723527728 is about 897.7423777736.

The spelling of 723527728 in words is "seven hundred twenty-three million, five hundred twenty-seven thousand, seven hundred twenty-eight".