67788028 has 48 divisors (see below), whose sum is σ = 149151744. Its totient is φ = 26187840.

The previous prime is 67788023. The next prime is 67788037. The reversal of 67788028 is 82088776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67788023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38250 + ... + 39982.

It is an arithmetic number, because the mean of its divisors is an integer number (3107328).

Almost surely, 2^67788028 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 67788028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74575872).

67788028 is an abundant number, since it is smaller than the sum of its proper divisors (81363716).

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

67788028 is a wasteful number, since it uses less digits than its factorization.

67788028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 1880 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 67788028 is about 8233.3485290008. The cubic root of 67788028 is about 407.7409527591.

The spelling of 67788028 in words is "sixty-seven million, seven hundred eighty-eight thousand, twenty-eight".