138587048 has 16 divisors (see below), whose sum is σ = 260160180. Its totient is φ = 69211008.

The previous prime is 138587039. The next prime is 138587087. The reversal of 138587048 is 840785831.

It can be written as a sum of positive squares in 2 ways, for example, as 137780644 + 806404 = 11738^2 + 898^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2861 + ... + 16892.

Almost surely, 2^138587048 is an apocalyptic number.

It is an amenable number.

138587048 is a deficient number, since it is larger than the sum of its proper divisors (121573132).

138587048 is a wasteful number, since it uses less digits than its factorization.

138587048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20636 (or 20632 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 138587048 is about 11772.3000301555. The cubic root of 138587048 is about 517.4966562987.

The spelling of 138587048 in words is "one hundred thirty-eight million, five hundred eighty-seven thousand, forty-eight".