138180272 has 20 divisors (see below), whose sum is σ = 268435200. Its totient is φ = 68906688.

The previous prime is 138180257. The next prime is 138180277. The reversal of 138180272 is 272081831.

It is not an unprimeable number, because it can be changed into a prime (138180277) 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 in 3 ways as a sum of consecutive naturals, for example, 5147 + ... + 17402.

It is an arithmetic number, because the mean of its divisors is an integer number (13421760).

Almost surely, 2^138180272 is an apocalyptic number.

It is an amenable number.

138180272 is a deficient number, since it is larger than the sum of its proper divisors (130254928).

138180272 is a wasteful number, since it uses less digits than its factorization.

138180272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22940 (or 22934 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 138180272 is about 11755.0105061629. The cubic root of 138180272 is about 516.9898472442.

The spelling of 138180272 in words is "one hundred thirty-eight million, one hundred eighty thousand, two hundred seventy-two".