138088788 has 24 divisors (see below), whose sum is σ = 322543200. Its totient is φ = 45981600.

The previous prime is 138088763. The next prime is 138088799. The reversal of 138088788 is 887880831.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 138088788.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7138 + ... + 18086.

It is an arithmetic number, because the mean of its divisors is an integer number (13439300).

Almost surely, 2^138088788 is an apocalyptic number.

It is an amenable number.

138088788 is an abundant number, since it is smaller than the sum of its proper divisors (184454412).

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

138088788 is a wasteful number, since it uses less digits than its factorization.

138088788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12007 (or 12005 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 51.

The square root of 138088788 is about 11751.1185850539. The cubic root of 138088788 is about 516.8757288295.

The spelling of 138088788 in words is "one hundred thirty-eight million, eighty-eight thousand, seven hundred eighty-eight".