138340264 has 16 divisors (see below), whose sum is σ = 260226720. Its totient is φ = 68946480.

The previous prime is 138340249. The next prime is 138340289. The reversal of 138340264 is 462043831.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25314 + ... + 30289.

It is an arithmetic number, because the mean of its divisors is an integer number (16264170).

Almost surely, 2^138340264 is an apocalyptic number.

It is an amenable number.

138340264 is a deficient number, since it is larger than the sum of its proper divisors (121886456).

138340264 is a wasteful number, since it uses less digits than its factorization.

138340264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55920 (or 55916 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 138340264 is about 11761.8138057019. The cubic root of 138340264 is about 517.1893024809.

The spelling of 138340264 in words is "one hundred thirty-eight million, three hundred forty thousand, two hundred sixty-four".