723423228 has 48 divisors (see below), whose sum is σ = 1884279936. Its totient is φ = 214119360.

The previous prime is 723423227. The next prime is 723423247. The reversal of 723423228 is 822324327.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723423227) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 58051 + ... + 69402.

It is an arithmetic number, because the mean of its divisors is an integer number (39255832).

Almost surely, 2^723423228 is an apocalyptic number.

It is an amenable number.

723423228 is an abundant number, since it is smaller than the sum of its proper divisors (1160856708).

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

723423228 is a wasteful number, since it uses less digits than its factorization.

723423228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127514 (or 127512 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 723423228 is about 26896.5281774433. The cubic root of 723423228 is about 897.6991550139.

The spelling of 723423228 in words is "seven hundred twenty-three million, four hundred twenty-three thousand, two hundred twenty-eight".