138716284 has 24 divisors (see below), whose sum is σ = 284201568. Its totient is φ = 57999360.

The previous prime is 138716273. The next prime is 138716297. The reversal of 138716284 is 482617831.

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, 59269 + ... + 61564.

It is an arithmetic number, because the mean of its divisors is an integer number (11841732).

Almost surely, 2^138716284 is an apocalyptic number.

138716284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138716284 is an abundant number, since it is smaller than the sum of its proper divisors (145485284).

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

138716284 is a wasteful number, since it uses less digits than its factorization.

138716284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120885 (or 120883 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 138716284 is about 11777.7877379413. The cubic root of 138716284 is about 517.6574659865.

It can be divided in two parts, 1387 and 16284, that added together give a palindrome (17671).

The spelling of 138716284 in words is "one hundred thirty-eight million, seven hundred sixteen thousand, two hundred eighty-four".