138246684 has 24 divisors (see below), whose sum is σ = 328663440. Its totient is φ = 45212544.

The previous prime is 138246673. The next prime is 138246733. The reversal of 138246684 is 486642831.

138246684 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138246684² = 38224291273991712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108049 + ... + 109320.

It is an arithmetic number, because the mean of its divisors is an integer number (13694310).

Almost surely, 2^138246684 is an apocalyptic number.

It is an amenable number.

138246684 is an abundant number, since it is smaller than the sum of its proper divisors (190416756).

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

138246684 is a wasteful number, since it uses less digits than its factorization.

138246684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217429 (or 217427 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 138246684 is about 11757.8350047957. The cubic root of 138246684 is about 517.0726589464.

The spelling of 138246684 in words is "one hundred thirty-eight million, two hundred forty-six thousand, six hundred eighty-four".