67828638 has 8 divisors (see below), whose sum is σ = 135657288. Its totient is φ = 22609544.

The previous prime is 67828627. The next prime is 67828639. The reversal of 67828638 is 83682876.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

67828638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67828639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5652381 + ... + 5652392.

It is an arithmetic number, because the mean of its divisors is an integer number (16957161).

Almost surely, 2^67828638 is an apocalyptic number.

67828638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

67828638 is a wasteful number, since it uses less digits than its factorization.

67828638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11304778.

The product of its digits is 774144, while the sum is 48.

The square root of 67828638 is about 8235.8143495346. The cubic root of 67828638 is about 407.8223587493.

The spelling of 67828638 in words is "sixty-seven million, eight hundred twenty-eight thousand, six hundred thirty-eight".