138524068 has 24 divisors (see below), whose sum is σ = 251254080. Its totient is φ = 66746400.

The previous prime is 138524047. The next prime is 138524093. The reversal of 138524068 is 860425831.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 94743 + ... + 96193.

It is an arithmetic number, because the mean of its divisors is an integer number (10468920).

Almost surely, 2^138524068 is an apocalyptic number.

It is an amenable number.

138524068 is a deficient number, since it is larger than the sum of its proper divisors (112730012).

138524068 is a wasteful number, since it uses less digits than its factorization.

138524068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307 (or 2305 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 138524068 is about 11769.6248028559. The cubic root of 138524068 is about 517.4182534027.

Adding to 138524068 its reverse (860425831), we get a palindrome (998949899).

The spelling of 138524068 in words is "one hundred thirty-eight million, five hundred twenty-four thousand, sixty-eight".