138528314 has 4 divisors (see below), whose sum is σ = 207792474. Its totient is φ = 69264156.

The previous prime is 138528311. The next prime is 138528323. The reversal of 138528314 is 413825831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77141089 + 61387225 = 8783^2 + 7835^2 .

It is not an unprimeable number, because it can be changed into a prime (138528311) by changing a digit.

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 as a sum of consecutive naturals, namely, 34632077 + ... + 34632080.

Almost surely, 2^138528314 is an apocalyptic number.

138528314 is a deficient number, since it is larger than the sum of its proper divisors (69264160).

138528314 is an equidigital number, since it uses as much as digits as its factorization.

138528314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69264159.

The product of its digits is 23040, while the sum is 35.

The square root of 138528314 is about 11769.8051810555. The cubic root of 138528314 is about 517.4235399340.

The spelling of 138528314 in words is "one hundred thirty-eight million, five hundred twenty-eight thousand, three hundred fourteen".