138011832 has 72 divisors (see below), whose sum is σ = 434818800. Its totient is φ = 39430944.

The previous prime is 138011821. The next prime is 138011843. The reversal of 138011832 is 238110831.

It is an interprime number because it is at equal distance from previous prime (138011821) and next prime (138011843).

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 138011796 and 138011805.

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 17 ways as a sum of consecutive naturals, for example, 16032 + ... + 23087.

It is an arithmetic number, because the mean of its divisors is an integer number (6039150).

Almost surely, 2^138011832 is an apocalyptic number.

138011832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138011832 is an abundant number, since it is smaller than the sum of its proper divisors (296806968).

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

138011832 is a wasteful number, since it uses less digits than its factorization.

138011832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39145 (or 39131 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 138011832 is about 11747.8437170402. The cubic root of 138011832 is about 516.7796938061.

The spelling of 138011832 in words is "one hundred thirty-eight million, eleven thousand, eight hundred thirty-two".