138445027 has 16 divisors (see below), whose sum is σ = 165699072. Its totient is φ = 113097600.

The previous prime is 138445007. The next prime is 138445037. The reversal of 138445027 is 720544831.

It is not a de Polignac number, because 138445027 - 2¹¹ = 138442979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138444983 and 138445001.

It is not an unprimeable number, because it can be changed into a prime (138445007) 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, 48027 + ... + 50827.

It is an arithmetic number, because the mean of its divisors is an integer number (10356192).

Almost surely, 2^138445027 is an apocalyptic number.

138445027 is a deficient number, since it is larger than the sum of its proper divisors (27254045).

138445027 is a wasteful number, since it uses less digits than its factorization.

138445027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 138445027 is about 11766.2664851685. The cubic root of 138445027 is about 517.3198227646.

Adding to 138445027 its reverse (720544831), we get a palindrome (858989858).

The spelling of 138445027 in words is "one hundred thirty-eight million, four hundred forty-five thousand, twenty-seven".