68444928 has 108 divisors (see below), whose sum is σ = 200990608. Its totient is φ = 22394880.

The previous prime is 68444911. The next prime is 68444933. The reversal of 68444928 is 82944486.

It is a nude number because it is divisible by every one of its digits.

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 11 ways as a sum of consecutive naturals, for example, 140301 + ... + 140787.

Almost surely, 2^68444928 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 68444928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100495304).

68444928 is an abundant number, since it is smaller than the sum of its proper divisors (132545680).

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

68444928 is a wasteful number, since it uses less digits than its factorization.

68444928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 553 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 68444928 is about 8273.1449884551. The cubic root of 68444928 is about 409.0537926191.

The spelling of 68444928 in words is "sixty-eight million, four hundred forty-four thousand, nine hundred twenty-eight".