138366752 has 12 divisors (see below), whose sum is σ = 272409606. Its totient is φ = 69183360.

The previous prime is 138366751. The next prime is 138366779. The reversal of 138366752 is 257663831.

It can be written as a sum of positive squares in only one way, i.e., 138203536 + 163216 = 11756^2 + 404^2 .

It is not an unprimeable number, because it can be changed into a prime (138366751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2161949 + ... + 2162012.

Almost surely, 2^138366752 is an apocalyptic number.

It is an amenable number.

138366752 is a deficient number, since it is larger than the sum of its proper divisors (134042854).

138366752 is an equidigital number, since it uses as much as digits as its factorization.

138366752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323971 (or 4323963 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 138366752 is about 11762.9397686123. The cubic root of 138366752 is about 517.2223091068. Note that the first 3 decimals are identical.

The spelling of 138366752 in words is "one hundred thirty-eight million, three hundred sixty-six thousand, seven hundred fifty-two".