138532592 has 40 divisors (see below), whose sum is σ = 310038192. Its totient is φ = 59264000.

The previous prime is 138532577. The next prime is 138532607. The reversal of 138532592 is 295235831.

It is an interprime number because it is at equal distance from previous prime (138532577) and next prime (138532607).

It is a congruent number.

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, 20159 + ... + 26142.

Almost surely, 2^138532592 is an apocalyptic number.

It is an amenable number.

138532592 is an abundant number, since it is smaller than the sum of its proper divisors (171505600).

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

138532592 is a wasteful number, since it uses less digits than its factorization.

138532592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46337 (or 46331 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 138532592 is about 11769.9869158806. The cubic root of 138532592 is about 517.4288661980.

The spelling of 138532592 in words is "one hundred thirty-eight million, five hundred thirty-two thousand, five hundred ninety-two".