138505482 has 24 divisors (see below), whose sum is σ = 304576896. Its totient is φ = 45479016.

The previous prime is 138505457. The next prime is 138505513. The reversal of 138505482 is 284505831.

It is a happy number.

138505482 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56218 + ... + 58629.

It is an arithmetic number, because the mean of its divisors is an integer number (12690704).

Almost surely, 2^138505482 is an apocalyptic number.

138505482 is an abundant number, since it is smaller than the sum of its proper divisors (166071414).

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

138505482 is a wasteful number, since it uses less digits than its factorization.

138505482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114922 (or 114919 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 138505482 is about 11768.8352014972. The cubic root of 138505482 is about 517.3951114175.

The spelling of 138505482 in words is "one hundred thirty-eight million, five hundred five thousand, four hundred eighty-two".