67388928 has 80 divisors (see below), whose sum is σ = 182290416. Its totient is φ = 22118400.

The previous prime is 67388903. The next prime is 67388933. The reversal of 67388928 is 82988376.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111828 + ... + 112428.

Almost surely, 2^67388928 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 67388928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91145208).

67388928 is an abundant number, since it is smaller than the sum of its proper divisors (114901488).

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

67388928 is an equidigital number, since it uses as much as digits as its factorization.

67388928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 679 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 67388928 is about 8209.0759528707. The cubic root of 67388928 is about 406.9391896623.

The spelling of 67388928 in words is "sixty-seven million, three hundred eighty-eight thousand, nine hundred twenty-eight".