138679024 has 80 divisors (see below), whose sum is σ = 312122880. Its totient is φ = 59028480.

The previous prime is 138679019. The next prime is 138679039. The reversal of 138679024 is 420976831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377689 + ... + 378055.

It is an arithmetic number, because the mean of its divisors is an integer number (3901536).

Almost surely, 2^138679024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138679024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156061440).

138679024 is an abundant number, since it is smaller than the sum of its proper divisors (173443856).

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

138679024 is a wasteful number, since it uses less digits than its factorization.

138679024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 138679024 is about 11776.2058405923. The cubic root of 138679024 is about 517.6111132348.

The spelling of 138679024 in words is "one hundred thirty-eight million, six hundred seventy-nine thousand, twenty-four".