68427828 has 144 divisors (see below), whose sum is σ = 209139840. Its totient is φ = 19160064.

The previous prime is 68427809. The next prime is 68427833. The reversal of 68427828 is 82872486.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 605500 + ... + 605612.

It is an arithmetic number, because the mean of its divisors is an integer number (1452360).

Almost surely, 2^68427828 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 68427828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104569920).

68427828 is an abundant number, since it is smaller than the sum of its proper divisors (140712012).

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

68427828 is a wasteful number, since it uses less digits than its factorization.

68427828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 214 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 68427828 is about 8272.1114595972. Note that the first 3 decimals coincide. The cubic root of 68427828 is about 409.0197243413.

The spelling of 68427828 in words is "sixty-eight million, four hundred twenty-seven thousand, eight hundred twenty-eight".