68188338 has 32 divisors (see below), whose sum is σ = 156758400. Its totient is φ = 21945168.

The previous prime is 68188333. The next prime is 68188357. The reversal of 68188338 is 83388186.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68188293 and 68188302.

It is not an unprimeable number, because it can be changed into a prime (68188333) 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, 20206 + ... + 23337.

It is an arithmetic number, because the mean of its divisors is an integer number (4898700).

Almost surely, 2^68188338 is an apocalyptic number.

68188338 is an abundant number, since it is smaller than the sum of its proper divisors (88570062).

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

68188338 is a wasteful number, since it uses less digits than its factorization.

68188338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43583 (or 43577 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 68188338 is about 8257.6230236067. The cubic root of 68188338 is about 408.5419916313.

The spelling of 68188338 in words is "sixty-eight million, one hundred eighty-eight thousand, three hundred thirty-eight".