68287938 has 32 divisors (see below), whose sum is σ = 144752640. Its totient is φ = 21416400.

The previous prime is 68287937. The next prime is 68287939. The reversal of 68287938 is 83978286.

It is an interprime number because it is at equal distance from previous prime (68287937) and next prime (68287939).

It is not an unprimeable number, because it can be changed into a prime (68287931) 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, 15231 + ... + 19197.

It is an arithmetic number, because the mean of its divisors is an integer number (4523520).

Almost surely, 2^68287938 is an apocalyptic number.

68287938 is an abundant number, since it is smaller than the sum of its proper divisors (76464702).

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

68287938 is a wasteful number, since it uses less digits than its factorization.

68287938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4142.

The product of its digits is 1161216, while the sum is 51.

The square root of 68287938 is about 8263.6516141473. The cubic root of 68287938 is about 408.7408085543.

The spelling of 68287938 in words is "sixty-eight million, two hundred eighty-seven thousand, nine hundred thirty-eight".