138650532 has 48 divisors (see below), whose sum is σ = 338537472. Its totient is φ = 44082720.

The previous prime is 138650527. The next prime is 138650557. The reversal of 138650532 is 235056831.

It is a junction number, because it is equal to n+sod(n) for n = 138650493 and 138650502.

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 15 ways as a sum of consecutive naturals, for example, 190353 + ... + 191079.

It is an arithmetic number, because the mean of its divisors is an integer number (7052864).

Almost surely, 2^138650532 is an apocalyptic number.

138650532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138650532 is an abundant number, since it is smaller than the sum of its proper divisors (199886940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138650532 is a wasteful number, since it uses less digits than its factorization.

138650532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 138650532 is about 11774.9960509548. The cubic root of 138650532 is about 517.5756625817.

The spelling of 138650532 in words is "one hundred thirty-eight million, six hundred fifty thousand, five hundred thirty-two".