138275536 has 20 divisors (see below), whose sum is σ = 306181792. Its totient is φ = 59260896.

The previous prime is 138275507. The next prime is 138275539. The reversal of 138275536 is 635572831.

138275536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138275539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617190 + ... + 617413.

Almost surely, 2^138275536 is an apocalyptic number.

138275536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138275536 is an abundant number, since it is smaller than the sum of its proper divisors (167906256).

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

138275536 is a wasteful number, since it uses less digits than its factorization.

138275536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234618 (or 1234612 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 138275536 is about 11759.0618673430. The cubic root of 138275536 is about 517.1086273622.

The spelling of 138275536 in words is "one hundred thirty-eight million, two hundred seventy-five thousand, five hundred thirty-six".