68103138 has 32 divisors (see below), whose sum is σ = 142920576. Its totient is φ = 21593088.

The previous prime is 68103131. The next prime is 68103143. The reversal of 68103138 is 83130186.

It is not an unprimeable number, because it can be changed into a prime (68103131) 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, 25356 + ... + 27912.

It is an arithmetic number, because the mean of its divisors is an integer number (4466268).

Almost surely, 2^68103138 is an apocalyptic number.

68103138 is an abundant number, since it is smaller than the sum of its proper divisors (74817438).

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

68103138 is a wasteful number, since it uses less digits than its factorization.

68103138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 68103138 is about 8252.4625415690. The cubic root of 68103138 is about 408.3717656269.

The spelling of 68103138 in words is "sixty-eight million, one hundred three thousand, one hundred thirty-eight".