723152 has 10 divisors (see below), whose sum is σ = 1401138. Its totient is φ = 361568.

The previous prime is 723133. The next prime is 723157. The reversal of 723152 is 251327.

It can be written as a sum of positive squares in only one way, i.e., 712336 + 10816 = 844^2 + 104^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723157) by changing a digit.

723152 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22583 + ... + 22614.

2⁷²³¹⁵² is an apocalyptic number.

It is an amenable number.

723152 is a deficient number, since it is larger than the sum of its proper divisors (677986).

723152 is a wasteful number, since it uses less digits than its factorization.

723152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45205 (or 45199 counting only the distinct ones).

The product of its digits is 420, while the sum is 20.

The square root of 723152 is about 850.3834429244. The cubic root of 723152 is about 89.7586951640.

Adding to 723152 its reverse (251327), we get a palindrome (974479).

The spelling of 723152 in words is "seven hundred twenty-three thousand, one hundred fifty-two".