138750027 has 32 divisors (see below), whose sum is σ = 214878720. Its totient is φ = 78900480.

The previous prime is 138750011. The next prime is 138750041. The reversal of 138750027 is 720057831.

It is not a de Polignac number, because 138750027 - 2⁴ = 138750011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138750027.

It is not an unprimeable number, because it can be changed into a prime (138750067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28098 + ... + 32664.

It is an arithmetic number, because the mean of its divisors is an integer number (6714960).

Almost surely, 2^138750027 is an apocalyptic number.

138750027 is a deficient number, since it is larger than the sum of its proper divisors (76128693).

138750027 is a wasteful number, since it uses less digits than its factorization.

138750027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4643.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 138750027 is about 11779.2201354759. The cubic root of 138750027 is about 517.6994363047.

The spelling of 138750027 in words is "one hundred thirty-eight million, seven hundred fifty thousand, twenty-seven".