68217328 has 20 divisors (see below), whose sum is σ = 139946400. Its totient is φ = 32102144.

The previous prime is 68217313. The next prime is 68217341. The reversal of 68217328 is 82371286.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125128 + ... + 125671.

It is an arithmetic number, because the mean of its divisors is an integer number (6997320).

Almost surely, 2^68217328 is an apocalyptic number.

68217328 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68217328 is an abundant number, since it is smaller than the sum of its proper divisors (71729072).

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

68217328 is a wasteful number, since it uses less digits than its factorization.

68217328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250824 (or 250818 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 68217328 is about 8259.3781848272. The cubic root of 68217328 is about 408.5998800947.

The spelling of 68217328 in words is "sixty-eight million, two hundred seventeen thousand, three hundred twenty-eight".