138292888 has 8 divisors (see below), whose sum is σ = 259299180. Its totient is φ = 69146440.

The previous prime is 138292883. The next prime is 138292961. The reversal of 138292888 is 888292831.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138292883) 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 as a sum of consecutive naturals, namely, 8643298 + ... + 8643313.

Almost surely, 2^138292888 is an apocalyptic number.

It is an amenable number.

138292888 is a deficient number, since it is larger than the sum of its proper divisors (121006292).

138292888 is a wasteful number, since it uses less digits than its factorization.

138292888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17286617 (or 17286613 counting only the distinct ones).

The product of its digits is 442368, while the sum is 49.

The square root of 138292888 is about 11759.7996581574. The cubic root of 138292888 is about 517.1302568658.

The spelling of 138292888 in words is "one hundred thirty-eight million, two hundred ninety-two thousand, eight hundred eighty-eight".