68120838 has 20 divisors (see below), whose sum is σ = 152641500. Its totient is φ = 22706892.

The previous prime is 68120791. The next prime is 68120861. The reversal of 68120838 is 83802186.

It is a super-3 number, since 3×68120838³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 210088 + ... + 210411.

It is an arithmetic number, because the mean of its divisors is an integer number (7632075).

Almost surely, 2^68120838 is an apocalyptic number.

68120838 is an abundant number, since it is smaller than the sum of its proper divisors (84520662).

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

68120838 is a wasteful number, since it uses less digits than its factorization.

68120838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420513 (or 420504 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 68120838 is about 8253.5348790685. The cubic root of 68120838 is about 408.4071411586.

The spelling of 68120838 in words is "sixty-eight million, one hundred twenty thousand, eight hundred thirty-eight".