138307604 has 6 divisors (see below), whose sum is σ = 242038314. Its totient is φ = 69153800.

The previous prime is 138307601. The next prime is 138307633. The reversal of 138307604 is 406703831.

It can be written as a sum of positive squares in only one way, i.e., 122323600 + 15984004 = 11060^2 + 3998^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138307601) 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, 17288447 + ... + 17288454.

It is an arithmetic number, because the mean of its divisors is an integer number (40339719).

Almost surely, 2^138307604 is an apocalyptic number.

It is an amenable number.

138307604 is a deficient number, since it is larger than the sum of its proper divisors (103730710).

138307604 is a wasteful number, since it uses less digits than its factorization.

138307604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34576905 (or 34576903 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 138307604 is about 11760.4253324444. The cubic root of 138307604 is about 517.1485991417.

The spelling of 138307604 in words is "one hundred thirty-eight million, three hundred seven thousand, six hundred four".