138090932 has 24 divisors (see below), whose sum is σ = 292428864. Its totient is φ = 55700352.

The previous prime is 138090929. The next prime is 138090959. The reversal of 138090932 is 239090831.

It is a junction number, because it is equal to n+sod(n) for n = 138090892 and 138090901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144578 + ... + 145529.

It is an arithmetic number, because the mean of its divisors is an integer number (12184536).

Almost surely, 2^138090932 is an apocalyptic number.

It is an amenable number.

138090932 is an abundant number, since it is smaller than the sum of its proper divisors (154337932).

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

138090932 is a wasteful number, since it uses less digits than its factorization.

138090932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290135 (or 290133 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 138090932 is about 11751.2098100579. The cubic root of 138090932 is about 516.8784038616.

The spelling of 138090932 in words is "one hundred thirty-eight million, ninety thousand, nine hundred thirty-two".