68143828 has 12 divisors (see below), whose sum is σ = 123098752. Its totient is φ = 32972760.

The previous prime is 68143813. The next prime is 68143897. The reversal of 68143828 is 82834186.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 274650 + ... + 274897.

Almost surely, 2^68143828 is an apocalyptic number.

It is an amenable number.

68143828 is a deficient number, since it is larger than the sum of its proper divisors (54954924).

68143828 is a wasteful number, since it uses less digits than its factorization.

68143828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549582 (or 549580 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 68143828 is about 8254.9274981674. The cubic root of 68143828 is about 408.4530802300.

The spelling of 68143828 in words is "sixty-eight million, one hundred forty-three thousand, eight hundred twenty-eight".