138366448 has 20 divisors (see below), whose sum is σ = 292456728. Its totient is φ = 62893760.

The previous prime is 138366439. The next prime is 138366461. The reversal of 138366448 is 844663831.

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, 392911 + ... + 393262.

Almost surely, 2^138366448 is an apocalyptic number.

It is an amenable number.

138366448 is an abundant number, since it is smaller than the sum of its proper divisors (154090280).

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

138366448 is a wasteful number, since it uses less digits than its factorization.

138366448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786192 (or 786186 counting only the distinct ones).

The product of its digits is 331776, while the sum is 43.

The square root of 138366448 is about 11762.9268466653. The cubic root of 138366448 is about 517.2219303171.

The spelling of 138366448 in words is "one hundred thirty-eight million, three hundred sixty-six thousand, four hundred forty-eight".