723736528 has 20 divisors (see below), whose sum is σ = 1450593540. Its totient is φ = 349389824.

The previous prime is 723736501. The next prime is 723736547. The reversal of 723736528 is 825637327.

723736528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 204261264 + 519475264 = 14292^2 + 22792^2 .

It is a super-2 number, since 2×723736528² = 1047589123922989568, which contains 22 as substring.

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, 779425 + ... + 780352.

It is an arithmetic number, because the mean of its divisors is an integer number (72529677).

Almost surely, 2^723736528 is an apocalyptic number.

It is an amenable number.

723736528 is an abundant number, since it is smaller than the sum of its proper divisors (726857012).

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

723736528 is a wasteful number, since it uses less digits than its factorization.

723736528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559814 (or 1559808 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The square root of 723736528 is about 26902.3517187624. The cubic root of 723736528 is about 897.8287281061.

The spelling of 723736528 in words is "seven hundred twenty-three million, seven hundred thirty-six thousand, five hundred twenty-eight".