138028473 has 48 divisors (see below), whose sum is σ = 224415360. Its totient is φ = 81043200.

The previous prime is 138028433. The next prime is 138028477. The reversal of 138028473 is 374820831.

It is not a de Polignac number, because 138028473 - 2¹⁴ = 138012089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138028477) 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 47 ways as a sum of consecutive naturals, for example, 512983 + ... + 513251.

It is an arithmetic number, because the mean of its divisors is an integer number (4675320).

Almost surely, 2^138028473 is an apocalyptic number.

It is an amenable number.

138028473 is a deficient number, since it is larger than the sum of its proper divisors (86386887).

138028473 is a wasteful number, since it uses less digits than its factorization.

138028473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 138028473 is about 11748.5519533260. The cubic root of 138028473 is about 516.8004634873.

The spelling of 138028473 in words is "one hundred thirty-eight million, twenty-eight thousand, four hundred seventy-three".