68728424 has 32 divisors (see below), whose sum is σ = 130977000. Its totient is φ = 33806592.

The previous prime is 68728417. The next prime is 68728427. The reversal of 68728424 is 42482786.

It can be written as a sum of positive squares in 4 ways, for example, as 63520900 + 5207524 = 7970^2 + 2282^2 .

It is not an unprimeable number, because it can be changed into a prime (68728427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234422 + ... + 234714.

Almost surely, 2^68728424 is an apocalyptic number.

It is an amenable number.

68728424 is a deficient number, since it is larger than the sum of its proper divisors (62248576).

68728424 is a wasteful number, since it uses less digits than its factorization.

68728424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 673 counting only the distinct ones).

The product of its digits is 172032, while the sum is 41.

The square root of 68728424 is about 8290.2607920378. The cubic root of 68728424 is about 409.6177758450.

The spelling of 68728424 in words is "sixty-eight million, seven hundred twenty-eight thousand, four hundred twenty-four".