138795888 has 240 divisors, whose sum is σ = 483611904. Its totient is φ = 33208320.

The previous prime is 138795863. The next prime is 138795889. The reversal of 138795888 is 888597831.

Its product of digits (3870720) is a multiple of the sum of its prime factors (140).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138795889) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2953081 + ... + 2953127.

Almost surely, 2^138795888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138795888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241805952).

138795888 is an abundant number, since it is smaller than the sum of its proper divisors (344816016).

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

138795888 is a wasteful number, since it uses less digits than its factorization.

138795888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 87 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 57.

The square root of 138795888 is about 11781.1666654878. The cubic root of 138795888 is about 517.7564683621.

The spelling of 138795888 in words is "one hundred thirty-eight million, seven hundred ninety-five thousand, eight hundred eighty-eight".