724128378 has 32 divisors (see below), whose sum is σ = 1476576000. Its totient is φ = 236698176.

The previous prime is 724128373. The next prime is 724128401. The reversal of 724128378 is 873821427.

724128378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (724128373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65500 + ... + 75752.

It is an arithmetic number, because the mean of its divisors is an integer number (46143000).

Almost surely, 2^724128378 is an apocalyptic number.

724128378 is an abundant number, since it is smaller than the sum of its proper divisors (752447622).

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

724128378 is a wasteful number, since it uses less digits than its factorization.

724128378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10486.

The product of its digits is 150528, while the sum is 42.

The square root of 724128378 is about 26909.6335538037. The cubic root of 724128378 is about 897.9907349041.

The spelling of 724128378 in words is "seven hundred twenty-four million, one hundred twenty-eight thousand, three hundred seventy-eight".