138527884 has 12 divisors (see below), whose sum is σ = 264462408. Its totient is φ = 62967200.

The previous prime is 138527869. The next prime is 138527899. The reversal of 138527884 is 488725831.

It is an interprime number because it is at equal distance from previous prime (138527869) and next prime (138527899).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574137 + ... + 1574224.

It is an arithmetic number, because the mean of its divisors is an integer number (22038534).

Almost surely, 2^138527884 is an apocalyptic number.

It is an amenable number.

138527884 is a deficient number, since it is larger than the sum of its proper divisors (125934524).

138527884 is a wasteful number, since it uses less digits than its factorization.

138527884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148376 (or 3148374 counting only the distinct ones).

The product of its digits is 430080, while the sum is 46.

The square root of 138527884 is about 11769.7869139590. The cubic root of 138527884 is about 517.4230045624.

It can be divided in two parts, 13852 and 7884, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 138527884 in words is "one hundred thirty-eight million, five hundred twenty-seven thousand, eight hundred eighty-four".