138132372 has 72 divisors (see below), whose sum is σ = 376566624. Its totient is φ = 39294528.

The previous prime is 138132367. The next prime is 138132409. The reversal of 138132372 is 273231831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203698 + ... + 204374.

It is an arithmetic number, because the mean of its divisors is an integer number (5230092).

Almost surely, 2^138132372 is an apocalyptic number.

138132372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138132372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188283312).

138132372 is an abundant number, since it is smaller than the sum of its proper divisors (238434252).

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

138132372 is a wasteful number, since it uses less digits than its factorization.

138132372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045 (or 1036 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 138132372 is about 11752.9729005048. The cubic root of 138132372 is about 516.9301024018.

The spelling of 138132372 in words is "one hundred thirty-eight million, one hundred thirty-two thousand, three hundred seventy-two".