138502727 has 16 divisors (see below), whose sum is σ = 154610208. Its totient is φ = 123002880.

The previous prime is 138502717. The next prime is 138502751. The reversal of 138502727 is 727205831.

It is not a de Polignac number, because 138502727 - 2⁸ = 138502471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138502717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205463 + ... + 206135.

It is an arithmetic number, because the mean of its divisors is an integer number (9663138).

Almost surely, 2^138502727 is an apocalyptic number.

138502727 is a deficient number, since it is larger than the sum of its proper divisors (16107481).

138502727 is a wasteful number, since it uses less digits than its factorization.

138502727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 138502727 is about 11768.7181544975. The cubic root of 138502727 is about 517.3916809083.

The spelling of 138502727 in words is "one hundred thirty-eight million, five hundred two thousand, seven hundred twenty-seven".