138328698 has 32 divisors (see below), whose sum is σ = 279620352. Its totient is φ = 45619200.

The previous prime is 138328667. The next prime is 138328699. The reversal of 138328698 is 896823831.

138328698 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138328699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391690 + ... + 392042.

It is an arithmetic number, because the mean of its divisors is an integer number (8738136).

Almost surely, 2^138328698 is an apocalyptic number.

138328698 is an abundant number, since it is smaller than the sum of its proper divisors (141291654).

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

138328698 is a wasteful number, since it uses less digits than its factorization.

138328698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870.

The product of its digits is 497664, while the sum is 48.

The square root of 138328698 is about 11761.3221195578. The cubic root of 138328698 is about 517.1748887978.

The spelling of 138328698 in words is "one hundred thirty-eight million, three hundred twenty-eight thousand, six hundred ninety-eight".