68181828 has 48 divisors (see below), whose sum is σ = 186908736. Its totient is φ = 19071360.

The previous prime is 68181809. The next prime is 68181829. The reversal of 68181828 is 82818186.

It is a self number, because there is not a number n which added to its sum of digits gives 68181828.

It is not an unprimeable number, because it can be changed into a prime (68181829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18151 + ... + 21582.

It is an arithmetic number, because the mean of its divisors is an integer number (3893932).

Almost surely, 2^68181828 is an apocalyptic number.

It is an amenable number.

68181828 is an abundant number, since it is smaller than the sum of its proper divisors (118726908).

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

68181828 is a wasteful number, since it uses less digits than its factorization.

68181828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39764 (or 39762 counting only the distinct ones).

The product of its digits is 49152, while the sum is 42.

The square root of 68181828 is about 8257.2288329681. The cubic root of 68181828 is about 408.5289899310.

It can be divided in two parts, 6818 and 1828, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 68181828 in words is "sixty-eight million, one hundred eighty-one thousand, eight hundred twenty-eight".