138584276 has 12 divisors (see below), whose sum is σ = 243012000. Its totient is φ = 69152280.

The previous prime is 138584273. The next prime is 138584293. The reversal of 138584276 is 672485831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138584273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32720 + ... + 36711.

It is an arithmetic number, because the mean of its divisors is an integer number (20251000).

Almost surely, 2^138584276 is an apocalyptic number.

It is an amenable number.

138584276 is a deficient number, since it is larger than the sum of its proper divisors (104427724).

138584276 is a wasteful number, since it uses less digits than its factorization.

138584276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69934 (or 69932 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 138584276 is about 11772.1822955644. The cubic root of 138584276 is about 517.4932059755.

The spelling of 138584276 in words is "one hundred thirty-eight million, five hundred eighty-four thousand, two hundred seventy-six".