138500324 has 12 divisors (see below), whose sum is σ = 248926524. Its totient is φ = 67378464.

The previous prime is 138500321. The next prime is 138500333. The reversal of 138500324 is 423005831.

It can be written as a sum of positive squares in 2 ways, for example, as 76877824 + 61622500 = 8768^2 + 7850^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138500293 and 138500302.

It is not an unprimeable number, because it can be changed into a prime (138500321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467759 + ... + 468054.

It is an arithmetic number, because the mean of its divisors is an integer number (20743877).

Almost surely, 2^138500324 is an apocalyptic number.

It is an amenable number.

138500324 is a deficient number, since it is larger than the sum of its proper divisors (110426200).

138500324 is a wasteful number, since it uses less digits than its factorization.

138500324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935854 (or 935852 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 138500324 is about 11768.6160613727. The cubic root of 138500324 is about 517.3886886702.

The spelling of 138500324 in words is "one hundred thirty-eight million, five hundred thousand, three hundred twenty-four".