138234532 has 24 divisors (see below), whose sum is σ = 250810560. Its totient is φ = 66585120.

The previous prime is 138234529. The next prime is 138234541. The reversal of 138234532 is 235432831.

It is a junction number, because it is equal to n+sod(n) for n = 138234494 and 138234503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65193 + ... + 67279.

It is an arithmetic number, because the mean of its divisors is an integer number (10450440).

Almost surely, 2^138234532 is an apocalyptic number.

It is an amenable number.

138234532 is a deficient number, since it is larger than the sum of its proper divisors (112576028).

138234532 is a wasteful number, since it uses less digits than its factorization.

138234532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691 (or 2689 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 138234532 is about 11757.3182316377. The cubic root of 138234532 is about 517.0575081284.

The spelling of 138234532 in words is "one hundred thirty-eight million, two hundred thirty-four thousand, five hundred thirty-two".