138632032 has 48 divisors (see below), whose sum is σ = 340284672. Its totient is φ = 54011520.

The previous prime is 138632023. The next prime is 138632041. The reversal of 138632032 is 230236831.

138632032 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138632023) and next prime (138632041).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 25668 + ... + 30595.

It is an arithmetic number, because the mean of its divisors is an integer number (7089264).

Almost surely, 2^138632032 is an apocalyptic number.

It is an amenable number.

138632032 is an abundant number, since it is smaller than the sum of its proper divisors (201652640).

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

138632032 is a wasteful number, since it uses less digits than its factorization.

138632032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56291 (or 56283 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 138632032 is about 11774.2104618526. The cubic root of 138632032 is about 517.5526416923.

Adding to 138632032 its reverse (230236831), we get a palindrome (368868863).

The spelling of 138632032 in words is "one hundred thirty-eight million, six hundred thirty-two thousand, thirty-two".