138828692 has 12 divisors (see below), whose sum is σ = 243188736. Its totient is φ = 69346200.

The previous prime is 138828689. The next prime is 138828719. The reversal of 138828692 is 296828831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12308 + ... + 20715.

It is an arithmetic number, because the mean of its divisors is an integer number (20265728).

Almost surely, 2^138828692 is an apocalyptic number.

It is an amenable number.

138828692 is a deficient number, since it is larger than the sum of its proper divisors (104360044).

138828692 is a wasteful number, since it uses less digits than its factorization.

138828692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34078 (or 34076 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 138828692 is about 11782.5588052850. The cubic root of 138828692 is about 517.7972552219.

The spelling of 138828692 in words is "one hundred thirty-eight million, eight hundred twenty-eight thousand, six hundred ninety-two".