68208144 has 80 divisors (see below), whose sum is σ = 181321728. Its totient is φ = 22087296.

The previous prime is 68208103. The next prime is 68208149. The reversal of 68208144 is 44180286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68208149) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 408349 + ... + 408515.

Almost surely, 2^68208144 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 68208144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90660864).

68208144 is an abundant number, since it is smaller than the sum of its proper divisors (113113584).

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

68208144 is a wasteful number, since it uses less digits than its factorization.

68208144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 68208144 is about 8258.8221920562. The cubic root of 68208144 is about 408.5815428685.

The spelling of 68208144 in words is "sixty-eight million, two hundred eight thousand, one hundred forty-four".