68111428 has 96 divisors (see below), whose sum is σ = 159344640. Its totient is φ = 24675840.

The previous prime is 68111389. The next prime is 68111431. The reversal of 68111428 is 82411186.

It is a self number, because there is not a number n which added to its sum of digits gives 68111428.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 602700 + ... + 602812.

It is an arithmetic number, because the mean of its divisors is an integer number (1659840).

Almost surely, 2^68111428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68111428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79672320).

68111428 is an abundant number, since it is smaller than the sum of its proper divisors (91233212).

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

68111428 is a wasteful number, since it uses less digits than its factorization.

68111428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 68111428 is about 8252.9648006035. The cubic root of 68111428 is about 408.3883349299.

The spelling of 68111428 in words is "sixty-eight million, one hundred eleven thousand, four hundred twenty-eight".