68531128 has 16 divisors (see below), whose sum is σ = 129316680. Its totient is φ = 34046688.

The previous prime is 68531107. The next prime is 68531129. The reversal of 68531128 is 82113586.

It is a junction number, because it is equal to n+sod(n) for n = 68531093 and 68531102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68531129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26026 + ... + 28537.

Almost surely, 2^68531128 is an apocalyptic number.

It is an amenable number.

68531128 is a deficient number, since it is larger than the sum of its proper divisors (60785552).

68531128 is a wasteful number, since it uses less digits than its factorization.

68531128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54726 (or 54722 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 68531128 is about 8278.3529762870. The cubic root of 68531128 is about 409.2254422742.

It can be divided in two parts, 685 and 31128, that added together give a palindrome (31813).

The spelling of 68531128 in words is "sixty-eight million, five hundred thirty-one thousand, one hundred twenty-eight".